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: in traveling from a dormitory to a certain city , a student went 1 / 5 of the way by foot , 2 / 3 of the way by bus , and the remaining 10 kilometers by car . what is the distance , in kilometers , from the dormitory to the city ?

Ex Output:
62


Ex Input:
Problem: three numbers are in the ratio 2 : 3 : 5 and their average is 50 . the largest number is :

Ex Output:

75