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

Ex Input:
Problem: a , b , c , d , e , f , g , h sitting in a row what is the probability that a , b , c sitting together ?

Ex Output:
3 / 28


Ex Input:
Problem: the area of a triangle is with base 10 m and height 5 m ?

Ex Output:
25


Ex Input:
Problem: paul ' s income is 40 % less than rex ' s income , quentin ' s income is 20 % less than paul ' s income , and sam ' s income is 40 % less than paul ' s income . if rex gave 60 % of his income to sam and 40 % of his income to quentin , quentin ' s new income would be what fraction of sam ' s new income ?

Ex Output:

11 / 12