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

Example Input: Problem: the owner of a furniture shop charges his customer 25 % more than the cost price . if a customer paid rs . 1000 for a computer table , then what was the cost price of the computer table ?
Example Output: 80

Example Input: Problem: a bag contains 12 red marbles . if someone were to remove 2 marbles from the bag , one at a time , and replace the first marble after it was removed , the probability that neither marble would be red is 25 / 36 . how many marbles are in the bag ?
Example Output: 48

Example Input: Problem: what is the greatest integer m for which the number 50 ! / 10 ^ m is an integer ?
Example Output:
1