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

Example Input: Problem: a , b and c start a business each investing 20,000 . after 5 months a withdrew 5000 , b withdrew 4000 and c invests 6000 more . at the end of the year , a total profit of 69,900 was recorded . find the share of b .
Example Output: 28,200

Example Input: Problem: the volume of water inside a swimming pool doubles every hour . if the pool is filled to its full capacity within 8 hours , in how many hours was it filled to one quarter of its capacity ?
Example Output: 6', 'e ) 7'

Example Input: Problem: 2001 + 1015
Example Output:
3016