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

Input: Consider Input: Problem: an aeroplane covers a certain distance of 670 kmph in 6 hours . to cover the same distance in 6 1 / 4 hours , it must travel at a speed of

Output: 643


Input: Consider Input: Problem: a man have 8 t - shirt and some pant . he can dress in 72 ways . then tell me the no . of pant that man have .

Output: 9


Input: Consider Input: Problem: if the wages of 6 men for 15 days be rs . 2100 , then find the wages of for 12 days .


Output: rs . 2520