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

Input: Consider Input: Problem: the sum of ages of 5 children born 1 years different each is 30 years . what is the age of the elder child ?

Output: 8


Input: Consider Input: Problem: a cat chases a rat 6 hours after the rat runs . cat takes 4 hours to reach the rat . if the average speed of the cat is 90 kmph , what s the average speed of the rat ?

Output: 36 kmph


Input: Consider Input: Problem: a = 5 ^ 10 - 625 ^ 2 and a / x is an integer , where x is a positive integer greater than 1 , such that it does not have a factor p such that 1 < p < x , then how many different values for x are possible ?


Output: two