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.

[EX Q]: Adam had 33 books . If he sold 11 of them and used the money he earned to buy 23 new books , how many books would Adam have ?
[EX A]: 45

[EX Q]: Paige had 8 songs on her mp3 player . If she deleted 5 old songs from it and then added 30 new songs , how many songs does she have on her mp3 player ?
[EX A]: 33

[EX Q]: At a restaurant each adult meal costs $ 2 and kids eat free . If a group of 15 people came in and 9 were kids , how much would it cost for the group to eat ?
[EX A]:
12