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

Example Input: Problem: what is the prime factors ’ number of 18 ?
Example Output: 3

Example Input: Problem: the distance between a & b is 1540 km . a person is traveling from a to b at 100 km / hr started at 6 am and another person is traveling from b to a at 120 km / hr and started at same time . then at what time they meet together .
Example Output: 1 pm

Example Input: Problem: if 5 % more is gained by selling an article for rs . 350 than by selling it for rs . 340 , the cost of the article is
Example Output:
200