fix(curriculum): remove repetitive explanations in bill splitter workshop (#67081)

curriculum/challenges/english/blocks/workshop-bill-splitter/69757cc0faae0152c1418aad.md

@@ -9,13 +9,7 @@ dashedName: step-1
 
 In this workshop, you will practice working with numbers and mathematical operations to build a bill splitter. This tool will calculate how much each person owes after adding meal costs and a tip.
 
-To start, you need a way to keep track of the total amount as costs are added. In Python, you can use a variable to store an integer (a whole number) that changes over time.
-
-For example, you might write:
-
-```py
-my_number = 2
-```
+To start, you need a way to keep track of the total amount as costs are added. 
 
 Create a variable named `running_total` and assign it the value `0`.
 

curriculum/challenges/english/blocks/workshop-bill-splitter/6977a4306bb3e856690a4890.md

@@ -9,8 +9,6 @@ dashedName: step-6
 
 Now that you have calculated the tip, you need to add it to your `running_total` to find the final bill amount.
 
-In Python, you can use the augmented assignment operator `+=` to add a value to a variable and update that variable at the same time. For example, `total += 5` is a shorthand way of writing `total = total + 5`.
-
 Use the `+=` operator to add the value of `tip` to your `running_total`. Finally, use `print()` to display the string `Total with tip:` followed by a space and the value of `running_total`.
 
 # --hints--

curriculum/challenges/english/blocks/workshop-bill-splitter/697a7f71ebfcd9e4cacd69c2.md

@@ -9,7 +9,7 @@ dashedName: step-8
 
 The bill is split, but division often results in long decimal numbers. Since money is typically represented with two decimal places, you should round the final result.
 
-Python provides a built-in `round()` function for this. It takes two arguments: the number you want to round and the number of decimal places to keep. Here's an example:
+In an earlier lesson, you learned about the `round()` function which takes two arguments: the number you want to round and the number of decimal places to keep. Here's an example:
 
 ```py
 num = 4.815162342

curriculum/challenges/english/blocks/workshop-bill-splitter/6982684f3a25f379e195a5fc.md

@@ -7,9 +7,9 @@ dashedName: step-4
 
 # --description--
 
-Now that you have stored the individual costs, you can calculate the total. In Python, you use the addition operator `+` to sum values together. 
+Now that you have stored the individual costs, you can calculate the total. 
 
-The `+=` operator adds a value to an existing variable and updates it at the same time. For example:
+Recall that the `+=` operator adds a value to an existing variable and updates it at the same time. For example:
 
 ```py
 total = 10