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.

Context: Paco had 37 sweet cookies and 11 salty cookies. He ate 5 sweet cookies and 2 salty cookies. 

 Question: How many more sweet cookies than salty cookies did he eat?
3

Context: Jake has 84 more apples and 10 fewer peaches than Steven. Steven has 13 peaches and 52 apples. 

 Question: How many peaches does Jake have?
3

Context: Paul had 21 books. After selling some in a garage sale he bought 42 new ones. If he has 15 books now 

 Question: How many more books did he sell than he bought?

6