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

Example Input: Problem: the difference between the place values of two nines in the numerical 62039295 is
Example Output: 8910

Example Input: Problem: a 9 % stock yields 8 % . the market value of the stock is :
Example Output: rs . 112.50

Example Input: Problem: if x is an integer and 2.13 × 10 ^ x is less than 2100 , what is the greatest possible value for x ?
Example Output:
2