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

Example Input: Problem: what is 82 % of 3 / 5 ?
Example Output: 0.492

Example Input: Problem: a rectangle having length 89 cm and width 34 cm . if the length of the rectangle is increased by eighty percent then how much percent the breadth should be decreased so as to maintain the same area .
Example Output: 47.33 %

Example Input: Problem: a train 250 m long passed a pole in 10 sec . how long will it take to pass a platform 1250 m long ?
Example Output:
60 sec