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

Example Input: Problem: calculate the share of z , if rs . 3720 is divided among x , y and z in the ratio 7 : 8 : 11 ?
Example Output: 1574.1

Example Input: Problem: i had rs . 10000 with me . out of this , money i lent some money to a for 2 years at 15 % simple interest . i lent the remaining money to b for an equal number of years at 18 % simple interest . after 2 years , i found that a had given me rs . 360 more as interest as compared to ( b ) the amount of money which i had lent to b must have been
Example Output: 4000

Example Input: Problem: if each side of a square is increased by 20 % , find the percentage change in its area ?
Example Output:
44 %