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

Ex Input:
Problem: the speed of a car is 85 km in the first hour and 45 km in the second hour . what is the average speed of the car ?

Ex Output:
65 kmph


Ex Input:
Problem: ( 935421 x 625 ) = ?

Ex Output:
584638125


Ex Input:
Problem: convert the 17 / 36 m / s into kilometers per hour ?

Ex Output:

1.7