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

Ex Input:
Problem: a certain rectangular crate measures 8 feet by 14 feet by 16 feet . a cylindrical gas tank is to be made for shipment in the crate and will stand upright when the crate is placed on one of its six faces . what should the radius of the tank be if it is to be of the largest possible volume ?

Ex Output:
6


Ex Input:
Problem: a number x is mistakenly divided by 10 instead of being multiplied by 10 . what is the percentage error in the result ?

Ex Output:
- 99 %


Ex Input:
Problem: 160 % of 5 / 8 =

Ex Output:

1.