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

Ex Input:
Problem: the smallest value of n , for which n + 2 is not a prime number , is

Ex Output:
2,4

Ex Input:
Problem: calculate the sum of first 60 natural numbers .

Ex Output:
1830

Ex Input:
Problem: if n is a positive integer and n ^ 2 is divisible by 36 , then the largest positive integer that must divide n is

Ex Output:
6