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]: There were 39 girls and 4 boys trying out for the schools basketball team . If only 26 of them got called back , how many students did n't make the cut ?
[EX A]: 17

[EX Q]: The school cafeteria ordered 37 red apples and 45 green apples for students lunches . But , if only 51 students wanted fruit , how many extra did the cafeteria end up with ?
[EX A]: 31

[EX Q]: Roger was helping the cafeteria workers pick up lunch trays , but he could only carry 4 trays at a time . If he had to pick up 10 trays from one table and 2 trays from another , how many trips will he make ?
[EX A]:
3