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: Danny collects bottle caps. He found 63 bottle caps at the park while he threw away 51 old ones. Now he has 33 bottle caps in his collection. 

 Question: How many bottle caps did danny have at first?

A: 21
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Q: Context: During summer break 61619 kids from Lawrence county stayed home and the rest went to camp. The total number of kids in Lawrence county is 91676. 

 Question: About how many kids in Lawrence county went to camp?

A: 30057
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Q: Context: Paul had 134 books. After giving 39 books to his friend and selling some books in a garage sale he had 68 books left. 

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

A:
27
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