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

Input: Consider Input: Problem: if the sides of a cube are in the ratio 5 : 3 . what is the ratio of their diagonals ?

Output: 5 : 3'

Input: Consider Input: Problem: what is the sum of natural numbers between 30 and 100

Output: 4615

Input: Consider Input: Problem: sheela deposits rs . 5000 in bank savings account . if this is 20 % of her monthly income . what is her monthly income in ?
Output: 25000