You are given a math word problem and you are supposed to apply a single mathematical operator 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 10 students riding on the school bus . at the first stop 3 students got off of the bus . how many students are left on the bus ?
[EX A]: 7

[EX Q]: belle collected 97 animal stickers . carolyn collected 18 fewer stickers than belle . how many stickers did carolyn collect ?
[EX A]: 79

[EX Q]: mrs. snyder made 86 heart cookies . she made 36 red cookies and the rest are pink . how many pink cookies did she make ?
[EX A]:
50