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

Ex Input:
Problem: tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random . what is the probability taht the ticket drawn has a number which is a multiple of 3 or 5 ?

Ex Output:
9 / 20


Ex Input:
Problem: a jogger running at 9 km / hr along side a railway track is 250 m ahead of the engine of a 120 m long train running at 45 km / hr in the same direction . in how much time will the train pass the jogger ?

Ex Output:
37 sec


Ex Input:
Problem: the radius of a cylindrical vessel is 8 cm and height is 3 cm . find the whole surface of the cylinder ?

Ex Output:

553.1 sq cm