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

[EX Q]: Students at Arcadia schools are participating in a coat drive . 9437 coats have been collected so far . 6922 coats were collected from the high schools , and the rest from the elementary schools . How many coats were collected at the elementary schools ?
[EX A]: 2515

[EX Q]: If Anne wandered for 3 hours at 2 miles per hour . How far did Anne go ?
[EX A]: 6

[EX Q]: Mary had 7 nickels in her bank . Her dad gave her 5 nickels . How many nickels does Mary have now ?
[EX A]:
12