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

Example Input: Problem: in a circuit board factory , all circuit boards that pass a verification process are certified . every board that fails the verification process is indeed faulty , but 1 / 8 of those that pass are also faulty . approximately how many faulty circuit boards exist in a group of 3,200 circuit boards where 64 fail inspection ?
Example Output: 456

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

Example Input: Problem: income and expenditure of a person are in the ratio 7 : 6 . if the income of the person is rs . 14000 , then find his savings ?
Example Output:
2000