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

Ex Input:
Problem: the cash realised on selling a 14 % stock is rs . 106.25 , brokerage being 1 / 4 % is ?

Ex Output:
106


Ex Input:
Problem: two pipes a and b can separately fill a cistern in 60 minutes and 75 minutes respectively . there is a third pipe in the bottom of the cistern to empty it . if all the three pipes are simultaneously opened , then the cistern is full in 50 minutes . in how much time , the third pipe alone can empty the cistern ?

Ex Output:
100 min


Ex Input:
Problem: a number x is 6 times another number y . the percentage that y is less than x is

Ex Output:

83.3 %