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

Example Input: Problem: | x + 3 | – | 4 - x | = | 9 + x | how many solutions will this equation have ?
Example Output: 1

Example Input: Problem: a shopkeeper loses 15 % , if an article is sold for rs . 102 . what should be the selling price of the article to gain 20 % ?
Example Output: rs . 144

Example Input: Problem: the radius of a wheel is 20.4 cm . what is the distance covered by the wheel in making 400 resolutions ?
Example Output:
512.448 m