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: Last week Fred had 111 dollars and Jason had 40 dollars. Fred washed cars over the weekend and now has 115 dollars. Jason delivered newspapers and now has 44 dollars. 

 Question: How much money did they earn by washing cars?

SOLUTION: 4

PROBLEM: Context: Marco and his dad went strawberry picking. Together they collected strawberries that weighed 24 pounds. On the way back Marco lost 9 pounds of strawberries. Marco's strawberries now weighed 3 pounds. 

 Question: How much did his dad's strawberries weigh?

SOLUTION: 12

PROBLEM: Context: Zachary did 46 push-ups and 58 crunches in gym class today. David did 38 more push-ups but 62 less crunches than zachary. 

 Question: How many more crunches than push-ups did Zachary do?

SOLUTION:
12