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]: Luke made 9 dollars mowing lawns and 18 dollars weed eating . If he only spent 3 dollar a week , how long would the money last him ?
[EX A]: 9

[EX Q]: While playing a trivia game , Frank answered 3 questions correct in the first half and 2 questions correct in the second half . If each question was worth 3 points , what was his final score ?
[EX A]: 15

[EX Q]: Kaleb had 34 books . If he sold 17 of them and used the money he earned to buy 7 new books , how many books would Kaleb have ?
[EX A]:
24