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

Ex Input:
Problem: what is the total number of integers between 10 and 50 that are divisible by 2 ?

Ex Output:
19

Ex Input:
Problem: a starts business with rs . 3500 and after 8 months , b joins with a as his partner . after a year , the profit is divided in the ratio 2 : 3 . what is b a ™️ s contribution in the capital ?

Ex Output:
15750

Ex Input:
Problem: a train covers a distance at a speed of 240 kmph in 5 hours . to cover the same distance in 5 / 3 hours , it must travel at a speed of ?

Ex Output:
720