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.

[EX Q]: Context: Zachary did 44 push-ups and 17 crunches in gym class today. David did 29 more push-ups but 13 less crunches than zachary.

Question: How many crunches did David do?
[EX A]: 4

[EX Q]: Context: Jack received 6 emails in the morning and 2 emails in the afternoon.

Question: How many more emails did Jack receive in the morning than in the afternoon?
[EX A]: 4

[EX Q]: Context: Paco had 22 sweet cookies and 75 salty cookies. He ate 15 sweet cookies and 54 salty cookies.

Question: How many sweet cookies did Paco have left?
[EX A]:
7