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

Example Input: Problem: how many multiples of 7 are there between 10 and 100 ( both are inclusive ) ?
Example Output: 13

Example Input: Problem: if the sides of a triangle are 26 cm , 24 cm and 15 cm , what is its area ?
Example Output: 180

Example Input: Problem: if 1 / 5 th of a number decreased by 5 is 5 , then the number is
Example Output:
50