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 35 push-ups and 3 crunches in gym class today. David did 58 more push-ups but 87 less crunches than zachary.

Question: How many more push-ups than crunches did Zachary do?
[EX A]: 32

[EX Q]: Context: Paul had 71 books. After selling some in a garage sale he bought 38 new ones. If he has 116 books now

Question: How many more books did he buy than he sold?
[EX A]: 45

[EX Q]: Context: Baker's friend bought 137 cakes from him. If he had made 169 cakes initially

Question: How many cakes would baker still have?
[EX A]:
32