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

Input: Consider Input: Problem: when positive integer n is divided by positive integer p , the quotient is 18 , with a remainder of 7 . when n is divided by ( p + 3 ) , the quotient is 15 and the remainder is 1 . what is the value of n ?

Output: 20

Input: Consider Input: Problem: if the average ( arithmetic mean ) of a and b is 45 and the average of b and c is 80 , what is the value of c a ?

Output: 60

Input: Consider Input: Problem: what percent of 250 is 45 ?
Output: 18 %