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: meena wrote all the numbers from 1 to 29,999 inclusive . how many digits did she write in total ?

Ex Output:
138,889


Ex Input:
Problem: the area of a parallelogram is 72 sq m and its base is 12 m . then the length of the height is ?

Ex Output:

6 m