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.

[Q]: Mike had 15 video games but 9 of them were n't working . If he wanted to sell the working games for $ 5 each , how much money could he earn ?
[A]: 30


[Q]: At a restaurant each adult meal costs $ 3 and kids eat free . If a group of 12 people came in and 7 were kids , how much would it cost for the group to eat ?
[A]: 15


[Q]: Kimberly went to the store 3 times last month . She buys 7 peanuts each time she goes to the store . How many peanuts did Kimberly buy last month ?
[A]:
21