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

Ex Input:
Problem: a square with sides of 15 units each . what would be the area of the square . consider a square as a combination of two right angled triangles .

Ex Output:
225', 'd ) 81', 'e ) 144'


Ex Input:
Problem: the average of first 22 natural numbers is ?

Ex Output:
11.5


Ex Input:
Problem: a bag contains an equal number of one rupee , 50 paise and 25 paise coins respectively . if the total value is 35 , how many coins of each type are there ?

Ex Output:

20 coins