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

Input: Consider Input: Problem: what is the sum of the numbers between 1 and 14 , inclusive ?

Output: 105


Input: Consider Input: Problem: mary can do a piece of work in 26 days . rosy is 30 % more efficient than mary . the number of days taken by rosy to do the same piece of work is ?

Output: 20


Input: Consider Input: Problem: a metered rikshaw charges rs 13.50 for the first 1 km and 2.50 per 1 / 3 km there after . what would the charge if this rikshaw is hired for 13 kms ? in approx ? ?


Output: 103.5 rs