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

Ex Input:
Problem: what positive number , when squared , is equal to the cube of the positive square root of 14 ?

Ex Output:
4


Ex Input:
Problem: the ratio of the radius of two circles is 1 : 3 , and then the ratio of their areas is ?

Ex Output:
1 : 9


Ex Input:
Problem: a train 110 m long is running with a speed of 36 km / hr . in what time will it pass a man who is running at 6 km / hr in the direction opposite to that in which the train is going ?

Ex Output:

9