You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Q: A pet store had 12 siamese cats and 20 house cats . During a sale they sold 20 cats . How many cats do they have left ?

A: 12
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Q: The cost of 5 feet of chain is 2 dollars , what length of chain can be purchased with 7.5 dollars ?

A: 18.75
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Q: Rachel bought two coloring books . One had 24 pictures and the other had 39 . After one week she had already colored 4 of the pictures . How many pictures does she still have to color ?

A:
59
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