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

Example Input: Problem: harold works at a resort from the beginning of march to the end of september . during the month of august this past year , he made 2 times the average ( arithmetic mean ) of his monthly totals in tips for the other months . his total tips for august were what fraction of his total tips for all of the months he worked ?
Example Output: 1 / 4

Example Input: Problem: a bullet train covers a distance in 50 min , if it runs at a speed of 48 kmph on an average . the speed at which the bullet train must run to reduce the time of journey to 40 min will be .
Example Output: 60 kmph

Example Input: Problem: 10 , 1000 , 100000 , 10000000 . . . .
Example Output:
1,000