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.
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Question: Context: Last week Fred had 19 dollars and Jason had 16 dollars. They washed cars over the weekend and now Fred has 40 dollars and Jason has 69 dollars.

Question: How much money did Fred earn over the weekend?

Answer: 21

Question: Context: Paco had 12 cookies. He ate 16 cookies and gave 21 of them to his friend.

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

Answer: 5

Question: Context: Paul had 95 pens and 153 books. After selling some books and pens in a garage sale he had 13 books and 23 pens left.

Question: How many books did he sell in the garage sale?

Answer:
140