The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: find the area of a parallelogram with base 10 cm and height 20 cm .
[EX A]: 200

[EX Q]: Problem: excluding stoppages , the average speed of a bus is 60 km / hr and including stoppages , the average speed of the bus is 15 km / hr . for how many minutes does the bus stop per hour ?
[EX A]: 4

[EX Q]: Problem: if @ is a binary operation defined as the difference between an integer n and the product of n and 5 , then what is the largest positive integer n such that the outcome of the binary operation of n is less than 14 ?
[EX A]:
3