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

Example 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 ?
Example Output: 9

Example Input: Problem: a train covers a distance of 12 km in 10 minutes . if it takes 8 seconds to pass a telegraph post , then the length of the train is
Example Output: 160 m

Example Input: Problem: the largest three digit number which is a perfect cube , is :
Example Output:
72