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

Input: Consider Input: Problem: what is the sum of the odd integers from 55 to 75 , inclusive ?

Output: 71

Input: Consider Input: Problem: in a university the average age in an arts class is 21 and average age in technical class is 18 . what is the age average of university if there are 8 arts classes and 5 technical classes ?

Output: 19.85

Input: Consider Input: Problem: a , b , c and d enter into partnership . a subscribes 1 / 3 of the capital b 1 / 4 , c 1 / 5 and d the rest . how much share did a get in a profit of rs . 2490 ?
Output: rs . 830