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: A farmer had 177 tomatoes and 12 potatoes in his garden. If he picked 53 tomatoes 

 Question: How many tomatoes and potatoes does he have left?

SOLUTION: 136

PROBLEM: Context: Randy has 79 blocks. He uses 14 blocks to build a tower and 11 blocks to build a house. 

 Question: How many blocks are left?

SOLUTION: 54

PROBLEM: Context: Last week Fred had 114 dollars and Jason had 22 dollars. They washed cars over the weekend and now Fred has 21 dollars and Jason has 78 dollars. 

 Question: How much money did Jason make over the weekend?

SOLUTION:
56

