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

Ex Input:
Problem: if k and w are the dimensions of a rectangle that has area 48 , and if k and w are integers such that k > w , what is the total number of possible values of k ?

Ex Output:
four

Ex Input:
Problem: what is the probability of getting a queen or spade from a set of cards ?

Ex Output:
4 / 13

Ex Input:
Problem: the present worth of rs . 2310 due 2 years hence , the rate of interest being 15 % per annum , is :

Ex Output:
1680