diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64a2d86799a58517c29f79a5.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64a2d86799a58517c29f79a5.md
index bd5d68131e5..b1254ac0c80 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64a2d86799a58517c29f79a5.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64a2d86799a58517c29f79a5.md
@@ -220,8 +220,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf2aff7f1fc7a550f40cb.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf2aff7f1fc7a550f40cb.md
index 8a7a5490fb4..70917677438 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf2aff7f1fc7a550f40cb.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf2aff7f1fc7a550f40cb.md
@@ -219,8 +219,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf83d46b16a7b20a27051.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf83d46b16a7b20a27051.md
index 4db2e32b171..0b5367819a4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf83d46b16a7b20a27051.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aaf83d46b16a7b20a27051.md
@@ -241,8 +241,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab0134716d0a7c8889f167.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab0134716d0a7c8889f167.md
index c6aca7756f6..8c76caac829 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab0134716d0a7c8889f167.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab0134716d0a7c8889f167.md
@@ -210,8 +210,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab06a9cc033b7d4a8bad2a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab06a9cc033b7d4a8bad2a.md
index fbf935e3d8c..4543e5eb24d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab06a9cc033b7d4a8bad2a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab06a9cc033b7d4a8bad2a.md
@@ -223,8 +223,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab143edad72b7e25b23f8a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab143edad72b7e25b23f8a.md
index dd4878c87a1..c139b43f06d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab143edad72b7e25b23f8a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab143edad72b7e25b23f8a.md
@@ -211,8 +211,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab178206f3237eafcc0ef4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab178206f3237eafcc0ef4.md
index abdfcc43b0e..df9ec808444 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab178206f3237eafcc0ef4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64ab178206f3237eafcc0ef4.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acebecb7484c8c6a760534.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acebecb7484c8c6a760534.md
index b90b21969c1..a3e5b1cccdb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acebecb7484c8c6a760534.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acebecb7484c8c6a760534.md
@@ -217,8 +217,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aced3e88b0a38cec824dea.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aced3e88b0a38cec824dea.md
index 9f9b7bf5646..5e82fff49c8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aced3e88b0a38cec824dea.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64aced3e88b0a38cec824dea.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acedb5f59c0c8d43e96aa4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acedb5f59c0c8d43e96aa4.md
index 25b6a98ae64..f9d259a1b93 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acedb5f59c0c8d43e96aa4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acedb5f59c0c8d43e96aa4.md
@@ -216,8 +216,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf1af380a708ded8761f0.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf1af380a708ded8761f0.md
index 26282cfbf8c..624915020f7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf1af380a708ded8761f0.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf1af380a708ded8761f0.md
@@ -245,8 +245,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf287857bb38e6dd7ca69.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf287857bb38e6dd7ca69.md
index d7e624dcbea..aa8ff0c7c20 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf287857bb38e6dd7ca69.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64acf287857bb38e6dd7ca69.md
@@ -211,8 +211,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c703f58330b3767399e486.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c703f58330b3767399e486.md
index b4d1d81db48..337451447f9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c703f58330b3767399e486.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c703f58330b3767399e486.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c705fd8969d677066792b8.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c705fd8969d677066792b8.md
index 6e281f253a8..db4d04998ba 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c705fd8969d677066792b8.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c705fd8969d677066792b8.md
@@ -221,8 +221,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c708fe06b0c3776f90faaf.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c708fe06b0c3776f90faaf.md
index f16f12e0503..f0b4186a192 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c708fe06b0c3776f90faaf.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c708fe06b0c3776f90faaf.md
@@ -221,8 +221,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70d3bf7504978368da6ad.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70d3bf7504978368da6ad.md
index 29191046767..c2628c79430 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70d3bf7504978368da6ad.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70d3bf7504978368da6ad.md
@@ -222,8 +222,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70f78dbf5667a307a7d90.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70f78dbf5667a307a7d90.md
index 5f33f48cd61..ffa76c0d679 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70f78dbf5667a307a7d90.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c70f78dbf5667a307a7d90.md
@@ -222,8 +222,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c71235eba6c67adaa9a458.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c71235eba6c67adaa9a458.md
index 15777e97ee9..30e6b5e6526 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c71235eba6c67adaa9a458.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c71235eba6c67adaa9a458.md
@@ -221,8 +221,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7135a9d35797b4bfb01b3.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7135a9d35797b4bfb01b3.md
index 299761f4508..8032d85e56f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7135a9d35797b4bfb01b3.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7135a9d35797b4bfb01b3.md
@@ -219,8 +219,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c714ec1b844f7bc0723deb.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c714ec1b844f7bc0723deb.md
index 1b7c4690679..1ea60cb210c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c714ec1b844f7bc0723deb.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c714ec1b844f7bc0723deb.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c715769bab5f7c14f6cd7b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c715769bab5f7c14f6cd7b.md
index d794f67b04f..94f68ec8852 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c715769bab5f7c14f6cd7b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c715769bab5f7c14f6cd7b.md
@@ -221,8 +221,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7168cba4a4f7c90c26277.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7168cba4a4f7c90c26277.md
index 790b3fe12b3..7354fc35209 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7168cba4a4f7c90c26277.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7168cba4a4f7c90c26277.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7173772c2497ce99b474c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7173772c2497ce99b474c.md
index cef18af0fab..028621fd89b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7173772c2497ce99b474c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7173772c2497ce99b474c.md
@@ -231,8 +231,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7202620a5e17d8a3c777d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7202620a5e17d8a3c777d.md
index ba088ae6cad..c38cb9ddb6a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7202620a5e17d8a3c777d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7202620a5e17d8a3c777d.md
@@ -237,8 +237,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c72e52133d687e8e6a60f6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c72e52133d687e8e6a60f6.md
index a118c7e778b..6f9b253f2cb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c72e52133d687e8e6a60f6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c72e52133d687e8e6a60f6.md
@@ -232,8 +232,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73367cce78a7fd65dd3be.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73367cce78a7fd65dd3be.md
index 0f231f5977c..4ae0ba136e3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73367cce78a7fd65dd3be.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73367cce78a7fd65dd3be.md
@@ -213,8 +213,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c734293def73808e609778.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c734293def73808e609778.md
index a76a2e28f99..786bca0cce9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c734293def73808e609778.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c734293def73808e609778.md
@@ -213,8 +213,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c736a531835181349c27d2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c736a531835181349c27d2.md
index 549b7d9958e..894d1e58644 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c736a531835181349c27d2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c736a531835181349c27d2.md
@@ -214,8 +214,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73981de025581bddb89eb.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73981de025581bddb89eb.md
index 1969f8aec1e..ef839afd1a2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73981de025581bddb89eb.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73981de025581bddb89eb.md
@@ -219,8 +219,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73df1424422832333a9fa.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73df1424422832333a9fa.md
index 5d4f2f003e6..9e82050b272 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73df1424422832333a9fa.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c73df1424422832333a9fa.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a226587f502c0525927.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a226587f502c0525927.md
index 4b1cf443127..03f904d8cfe 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a226587f502c0525927.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a226587f502c0525927.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a8a4138c6032241d498.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a8a4138c6032241d498.md
index 78296c2c791..e66eaf46bff 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a8a4138c6032241d498.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74a8a4138c6032241d498.md
@@ -232,8 +232,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74c293dd7cf03cbd58194.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74c293dd7cf03cbd58194.md
index 98ad2806e81..19c13a5dd7c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74c293dd7cf03cbd58194.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74c293dd7cf03cbd58194.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74e0064a9080443af0796.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74e0064a9080443af0796.md
index 863b556c833..7eea9fde1f7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74e0064a9080443af0796.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c74e0064a9080443af0796.md
@@ -210,8 +210,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c750c328e06f0878a9272e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c750c328e06f0878a9272e.md
index f9b1a616d5b..57a5947542e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c750c328e06f0878a9272e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c750c328e06f0878a9272e.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7527100b19b09037ce5db.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7527100b19b09037ce5db.md
index 2ecc5d231d2..a03d0f6332d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7527100b19b09037ce5db.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7527100b19b09037ce5db.md
@@ -216,8 +216,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7538db3e33d09704ab148.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7538db3e33d09704ab148.md
index 3255629f011..e5d52c57c2c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7538db3e33d09704ab148.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7538db3e33d09704ab148.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c754f598ca5409d0a08884.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c754f598ca5409d0a08884.md
index fe240206bbb..331fc90c91a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c754f598ca5409d0a08884.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c754f598ca5409d0a08884.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c755bf0034b20a428a4a1b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c755bf0034b20a428a4a1b.md
index 81d735c3b36..8eab1ff3633 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c755bf0034b20a428a4a1b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c755bf0034b20a428a4a1b.md
@@ -208,8 +208,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7561d44e2300a90a38ab6.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7561d44e2300a90a38ab6.md
index 6619c697bdc..644eda3f0d2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7561d44e2300a90a38ab6.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7561d44e2300a90a38ab6.md
@@ -236,8 +236,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7573fd2265f0b1c77e2ec.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7573fd2265f0b1c77e2ec.md
index 2899998b9e8..3556196eb2d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7573fd2265f0b1c77e2ec.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c7573fd2265f0b1c77e2ec.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c758ab7352130b775df8c4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c758ab7352130b775df8c4.md
index 4e74469c4f9..1ae82ede54a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c758ab7352130b775df8c4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c758ab7352130b775df8c4.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c764dd9071050d0a2c1473.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c764dd9071050d0a2c1473.md
index a3476e3eb87..0d7bcf49c65 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c764dd9071050d0a2c1473.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c764dd9071050d0a2c1473.md
@@ -223,8 +223,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9bab6998128282da063f9.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9bab6998128282da063f9.md
index 30ca7c73ea2..7e9df37bea4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9bab6998128282da063f9.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9bab6998128282da063f9.md
@@ -211,8 +211,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9db021d4d912906878f3a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9db021d4d912906878f3a.md
index e44b02dd0d2..d64a06e9bc4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9db021d4d912906878f3a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9db021d4d912906878f3a.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9dc4bd63a92295347c449.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9dc4bd63a92295347c449.md
index 638bb466729..38fea37dfa7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9dc4bd63a92295347c449.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9dc4bd63a92295347c449.md
@@ -224,8 +224,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e4cc5f06902dc75dc8f4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e4cc5f06902dc75dc8f4.md
index d9a5ea327f6..e078a2f7d4b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e4cc5f06902dc75dc8f4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e4cc5f06902dc75dc8f4.md
@@ -219,8 +219,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e90c433fde2e870285a3.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e90c433fde2e870285a3.md
index 4981cca3e89..fb41cb5cc7b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e90c433fde2e870285a3.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9e90c433fde2e870285a3.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9efea385ca536bf467a7c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9efea385ca536bf467a7c.md
index fe8e4f8db38..7efea5eca16 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9efea385ca536bf467a7c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9efea385ca536bf467a7c.md
@@ -208,8 +208,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fa51209ab5395d524cce.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fa51209ab5395d524cce.md
index 9e414a02015..c8f487558f6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fa51209ab5395d524cce.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fa51209ab5395d524cce.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fe7b2ffa3539fbf82d32.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fe7b2ffa3539fbf82d32.md
index 3318786b170..f6164e2d462 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fe7b2ffa3539fbf82d32.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64c9fe7b2ffa3539fbf82d32.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cab4d06512c95234256cbb.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cab4d06512c95234256cbb.md
index d0371c72105..5ba953124a1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cab4d06512c95234256cbb.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cab4d06512c95234256cbb.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caea41a4199e54253c60ca.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caea41a4199e54253c60ca.md
index 05ac7920583..f3566e3fbc7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caea41a4199e54253c60ca.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caea41a4199e54253c60ca.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md
index 7efda9045cc..73b8ef3b435 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeb134c3cdc5498cd75b9.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md
index a4531f7b311..78f08c73cb8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caeeae2fa57756035d6012.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md
index 5874bb8eb4d..56534fbb567 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf1be15606d5814c3387b.md
@@ -224,8 +224,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf237baef43587be6d860.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf237baef43587be6d860.md
index 58658716376..31c5e93dcf5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf237baef43587be6d860.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64caf237baef43587be6d860.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb24c224ac2c61fa1c70aa.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb24c224ac2c61fa1c70aa.md
index ffd38503006..951a7a9b683 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb24c224ac2c61fa1c70aa.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb24c224ac2c61fa1c70aa.md
@@ -217,8 +217,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb262dd91ecc62998736af.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb262dd91ecc62998736af.md
index db7b18c2008..f71961e5a17 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb262dd91ecc62998736af.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb262dd91ecc62998736af.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb26e84dd0b56313ba0c6e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb26e84dd0b56313ba0c6e.md
index c5f2f2bd6e0..6daf0cb6f26 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb26e84dd0b56313ba0c6e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb26e84dd0b56313ba0c6e.md
@@ -214,8 +214,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2a87057eb5655c66d1c2.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2a87057eb5655c66d1c2.md
index c19056c219a..b98397fb88f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2a87057eb5655c66d1c2.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2a87057eb5655c66d1c2.md
@@ -218,8 +218,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2da32f8443669fd4e725.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2da32f8443669fd4e725.md
index 93d5673caec..4bdca15477c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2da32f8443669fd4e725.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2da32f8443669fd4e725.md
@@ -231,8 +231,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2e5bdfb23a67272a07c7.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2e5bdfb23a67272a07c7.md
index 702b83cc24e..5a611a2bb51 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2e5bdfb23a67272a07c7.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2e5bdfb23a67272a07c7.md
@@ -240,8 +240,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2ff0c31b0f67a6d76a47.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2ff0c31b0f67a6d76a47.md
index c72b49c12ee..4329bba6d11 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2ff0c31b0f67a6d76a47.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb2ff0c31b0f67a6d76a47.md
@@ -237,8 +237,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb30b8e4719a67fe14f364.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb30b8e4719a67fe14f364.md
index c763ec2ed1f..267ddf28e63 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb30b8e4719a67fe14f364.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb30b8e4719a67fe14f364.md
@@ -239,8 +239,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb34c01b3d856a9a59261d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb34c01b3d856a9a59261d.md
index 511453db944..ee6e82dcfed 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb34c01b3d856a9a59261d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb34c01b3d856a9a59261d.md
@@ -225,8 +225,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb3f62b10c336bada1c70c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb3f62b10c336bada1c70c.md
index 41091f4a612..5da218c486d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb3f62b10c336bada1c70c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb3f62b10c336bada1c70c.md
@@ -223,8 +223,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb472593e3be6d10a7c13b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb472593e3be6d10a7c13b.md
index 3d4cb8f18f6..222309e32d5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb472593e3be6d10a7c13b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb472593e3be6d10a7c13b.md
@@ -223,8 +223,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb480723790d6d727b8ef5.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb480723790d6d727b8ef5.md
index a7d3fa3243f..159231582ac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb480723790d6d727b8ef5.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb480723790d6d727b8ef5.md
@@ -223,8 +223,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb48e36c9ad56dd7a523f4.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb48e36c9ad56dd7a523f4.md
index 9670a73667e..563a4aac446 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb48e36c9ad56dd7a523f4.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb48e36c9ad56dd7a523f4.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4978631a4f6e3e1b964d.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4978631a4f6e3e1b964d.md
index 0018a562055..e37e6f3b2a1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4978631a4f6e3e1b964d.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4978631a4f6e3e1b964d.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4e676c156f7332f40db7.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4e676c156f7332f40db7.md
index 0ce95df6e47..20c33f118d6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4e676c156f7332f40db7.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4e676c156f7332f40db7.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4ebdc75b3a73a43da5ec.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4ebdc75b3a73a43da5ec.md
index c234fab590a..c21012035b4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4ebdc75b3a73a43da5ec.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb4ebdc75b3a73a43da5ec.md
@@ -235,8 +235,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb50fd95831a745ea60d13.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb50fd95831a745ea60d13.md
index e7d0bcc8368..6bc57e539d8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb50fd95831a745ea60d13.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb50fd95831a745ea60d13.md
@@ -217,8 +217,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb522509ffb274daf9fd9e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb522509ffb274daf9fd9e.md
index 70049096d2f..ea4f6508cf9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb522509ffb274daf9fd9e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb522509ffb274daf9fd9e.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb583dadb33a77595797bd.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb583dadb33a77595797bd.md
index 9be2ae413ae..571cb8dcef7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb583dadb33a77595797bd.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb583dadb33a77595797bd.md
@@ -226,8 +226,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb5d1d48532b79b4e7ef6c.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb5d1d48532b79b4e7ef6c.md
index 22837a42bd2..87afb1923fd 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb5d1d48532b79b4e7ef6c.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/64cb5d1d48532b79b4e7ef6c.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6507512fe521de40085b8831.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6507512fe521de40085b8831.md
index 0b8887c8e15..8a464445d6d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6507512fe521de40085b8831.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/6507512fe521de40085b8831.md
@@ -207,8 +207,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650755908a8071409ab9e09e.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650755908a8071409ab9e09e.md
index 62475980c47..8e486ec6887 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650755908a8071409ab9e09e.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650755908a8071409ab9e09e.md
@@ -209,8 +209,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650756e20cffbe41305a0dde.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650756e20cffbe41305a0dde.md
index 3adcdd83639..3af98900be9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650756e20cffbe41305a0dde.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650756e20cffbe41305a0dde.md
@@ -223,8 +223,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650757918a9e97418dc3d71a.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650757918a9e97418dc3d71a.md
index 29476a22fbc..08ccd4351a1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650757918a9e97418dc3d71a.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/650757918a9e97418dc3d71a.md
@@ -219,8 +219,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
@@ -648,8 +648,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b006efc74c675c2bdfccba.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b006efc74c675c2bdfccba.md
index 603000dca89..0ed468a9a4e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b006efc74c675c2bdfccba.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b006efc74c675c2bdfccba.md
@@ -9,7 +9,7 @@ dashedName: step-33
 
 For the last condition, you will need to check if the player's `x` position has exceeded the right edge of the canvas. If it has, you will need to set the player's `x` position to the maximum value so the player does not accidentally go off screen to the right.
 
-Inside your `update` method, create an `if` statement that checks if `this.position.x >= canvas.width - 2 * this.width`. 
+Inside your `update` method, create an `if` statement that checks if `this.position.x >= canvas.width - this.width * 2`. 
 
 # --hints--
 
@@ -19,10 +19,10 @@ You should have an `if` statement inside your `update` method.
 assert.match(code, /if\s*\(\s*.*\s*\)\s*{/g);
 ```
 
-Your `if` statement should check if `this.position.x >= canvas.width - 2 * this.width`.
+Your `if` statement should check if `this.position.x >= canvas.width - this.width * 2`.
 
 ```js
-assert.match(code, /if\s*\(\s*this\.position\.x\s*>=\s*canvas\.width\s*-\s*2\s*\*\s*this\.width\s*\)\s*{/gi);
+assert.match(code, /if\s*\(\s*this\.position\.x\s*>=\s*canvas\.width\s*-\s*this\.width\s*\*\s*2\s*\)\s*{/gi);
 ```
 
 # --seed--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b00a6f1c429c5e9fa50e90.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b00a6f1c429c5e9fa50e90.md
index e5d338ae008..c4c28091be6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b00a6f1c429c5e9fa50e90.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b00a6f1c429c5e9fa50e90.md
@@ -7,16 +7,16 @@ dashedName: step-34
 
 # --description--
 
-Inside your `if` statement, assign `canvas.width - 2 * this.width` to `this.position.x`.
+Inside your `if` statement, assign `canvas.width - this.width * 2` to `this.position.x`.
 
 This will ensure that the player's `x` position will never exceed the right edge of the canvas.
 
 # --hints--
 
-You should assign `canvas.width - 2 * this.width` to `this.position.x` inside your `if` statement.
+You should assign `canvas.width - this.width * 2` to `this.position.x` inside your `if` statement.
 
 ```js
-assert.match(code, /this\.position\.x\s*=\s*canvas\.width\s*-\s*2\s*\*\s*this\.width;?/g);
+assert.match(code, /this\.position\.x\s*=\s*canvas\.width\s*-\s*this\.width\s*\*\s*2\s*;?/g);
 ```
 
 # --seed--
@@ -209,7 +209,7 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
+    if (this.position.x >= canvas.width - this.width * 2) {
       --fcc-editable-region--
       
       --fcc-editable-region--
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2a465d7ca3ab6e902285b.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2a465d7ca3ab6e902285b.md
index c361daf400b..5edb7b6b491 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2a465d7ca3ab6e902285b.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2a465d7ca3ab6e902285b.md
@@ -215,8 +215,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2bb4c279af3cd585ba777.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2bb4c279af3cd585ba777.md
index d4c7501bbfe..f0b1bfa32ef 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2bb4c279af3cd585ba777.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-intermediate-oop-by-building-a-platformer-game/65b2bb4c279af3cd585ba777.md
@@ -217,8 +217,8 @@ class Player {
       this.position.x = this.width;
     }
 
-    if (this.position.x >= canvas.width - 2 * this.width) {
-      this.position.x = canvas.width - 2 * this.width;
+    if (this.position.x >= canvas.width - this.width * 2) {
+      this.position.x = canvas.width - this.width * 2;
     }
   }
 }