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.

Q: Context: Paco had 40 sweet cookies and 25 salty cookies. He ate 28 salty cookies and 15 sweet cookies. 

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

A: 13
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Q: Context: Paco had 13 cookies. He ate 2 of them. Then he bought 36 more cookies 

 Question: How many more cookies did he buy than those he ate?

A: 34
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Q: Context: Paco had 6 cookies. He gave 30 cookies to his friend and ate 23 cookies. 

 Question: How many more cookies did he give to his friend than those he ate?

A:
7
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