TASK DEFINITION: You are given a math word problem and you are supposed to only use subtraction on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
PROBLEM: Context: Zachary did 51 push-ups in gym class today. David did 22 more push-ups than Zachary. John did 4 push-ups less than David.

Question: How many push-ups did John do?

SOLUTION: 69

PROBLEM: Context: Paul had 50 books. After buying some in a garage sale he had 151 left.

Question: How many books did he buy?

SOLUTION: 101

PROBLEM: Context: Dan had $ 3 left with him after he bought a candy bar. If he had $ 4 at the start

Question: How much did the candy bar cost?

SOLUTION:
1