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's room is 11 feet long and 15 feet wide. If she already has 16 square feet of carpet 

 Question: How much more carpet does she need to cover the whole floor?
Example Output: 149

Example Input: Context: Paco had 28 cookies. He ate some of them and had 7 cookies left. 

 Question: How many cookies did Paco eat?
Example Output: 21

Example Input: Context: Jack received 10 emails and 12 letters in the morning. He then received 3 emails and 44 letters in the afternoon. 

 Question: How many more emails did Jack receive in the morning than in the afternoon?
Example Output:
7