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

Ex Input:
Problem: in what time will a train 50 m long cross an electric pole , it its speed be 360 km / hr ?

Ex Output:
0.5


Ex Input:
Problem: a cylindrical can has a radius of 3 centimeters and a height of 24 centimeters . what is the area , in square centimeters , of a rectangular label that completely covers the curved surface of the can without over - lapping ?

Ex Output:
144 pi', 'e ) 576 pi'


Ex Input:
Problem: car x began traveling at an average speed of 35 miles per hour . after 72 minutes , car y began traveling at an average speed of 70 miles per hour . when both cars had traveled the same distance , both cars stopped . how many miles did car x travel from the time car y began traveling until both cars stopped ?

Ex Output:

42