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

Input: Consider Input: Problem: a train running at the speed of 70 km / hr crosses a pole in 9 sec . what is the length of the train ?

Output: 175 m


Input: Consider Input: Problem: if | x - 9 | = 3 x , then x = ?

Output: - 4.


Input: Consider Input: Problem: excluding the stoppages , the speed of a bus is 48 km / hr and including the stoppages the speed of the bus is 12 km / hr . for how many minutes does the bus stop per hour ?


Output: 45 min