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: After resting they decided to go for a swim. If the depth of the water is 10 times Dean's height and he stands at 9 feet

Question: How much deeper is the water than Dean's height?

A: 81
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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: Jerry had 9 action figures on a shelf in his room. Later he added 7 more action figures to the shelf. If he also has 10 books on the shelf

Question: How many more action figures than books were on his shelf?

A:
6
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