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.

Example Input: Context: Jesse has 18 square feet of carpet. If her room is 4 feet long and 20 feet wide 

 Question: How much more carpet does she need to cover the whole floor?
Example Output: 62

Example Input: Context: Paco had 97 salty cookies and 34 sweet cookies. He ate 15 sweet cookies and 56 salty cookies. 

 Question: How many sweet cookies did Paco have left?
Example Output: 19

Example Input: Context: A chef had 40 apples and 54 peaches. After making some pies, he had 39 apples left. 

 Question: How many apples did he use?
Example Output:
1