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]: Isabel baked 3 brownies , but needed 5 total for her party . If she used 5 cups of flour on each one , how much cups of flour does she still need ?
[A]: 10


[Q]: Tom bought 12 boxes of chocolate candy and gave 7 to his little brother . If each box has 6 pieces inside it , how many pieces did Tom still have ?
[A]: 30


[Q]: There are 4 crayons in each box . How many crayons are in 3 boxes ?
[A]:
12