You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: Kelly has 121 Nintendo games . How many does Kelly need to give away so that Kelly will have 22 games left ?
[EX A]: 99

[EX Q]: At the schools book fair Sam bought 13 adventure books and 17 mystery books . If 15 of the books were used , how many new books did he buy ?
[EX A]: 15

[EX Q]: There were 30 girls and 36 boys trying out for the schools basketball team . If only 10 of them got called back , how many students did n't make the cut ?
[EX A]:
56