Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

Q: isha 's pencil is 31 inches long . if she sharpens it now her pencil is 14 inches long . how much did she sharpen off of her pencil ?

A: 17
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Q: mrs. santiago has 58 red roses . mrs. garrett has 24 what 's the difference of the number of mrs. santiago 's red roses and mrs. garrett 's red roses ?

A: 34
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Q: mrs. hilt picked up a book that has 17 pages in it . she read 11 of the pages . how many pages did she have left to read ?

A:
6
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