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 magician was selling magic card decks for 9 dollars each . If he started with 12 decks and by the end of the day he had 7 left , how much money did he earn ?

A: 45
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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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Q: Gwen earned 8 points for each bag of cans she recycled . If she had 4 bags , but did n't recycle 2 of them , how many points would she have earned ?

A:
16
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