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

Example Input: Problem: the product of two successive numbers is 4160 . which is the smaller of the two numbers ?
Example Output: 64

Example Input: Problem: a train running at the speed of 40 km / hr crosses a pole in 9 seconds . what is the length of the train ?
Example Output: 100 meter

Example Input: Problem: a seller of used cars has 12 cars to sell and each of his clients selected 4 cars that he liked most . if each car was selected exactly thrice , how many clients visited the garage ?
Example Output:
9