instruction:
You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
question:
Gwen was organizing her book case making sure each of the shelves had exactly 9 books on it . If she had 3 shelves of mystery books and 5 shelves of picture books , how many books did she have total ?
answer:
72

question:
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 ?
answer:
45

question:
At a restaurant each adult meal costs $ 2 and kids eat free . If a group of 9 people came in and 2 were kids , how much would it cost for the group to eat ?
answer:
14