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

Ex Input:
Problem: find the least number must be subtracted from 62575 so that remaining number is divisible by 99 .

Ex Output:
7


Ex Input:
Problem: a train 200 m long can cross an electric pole in 5 sec and then find the speed of the train ?

Ex Output:
144


Ex Input:
Problem: jane and thomas are among the 8 people from which a committee of 4 people is to be selected . how many different possible committees of 4 people can be selected from these 8 people if at least one of either jane or thomas is to be selected ?

Ex Output:

55