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

Input: Consider Input: Problem: a solution contains 8 parts of water for every 7 parts of lemonade syrup . how many parts of the solution should be removed and replaced with water so that the solution will now contain 25 % lemonade syrup ?

Output: 2.14


Input: Consider Input: Problem: the total age of a and b is 12 years more than the total age of b and c . c is how many year younger than a

Output: 12


Input: Consider Input: Problem: what is the sum of all possible solutions to | x - 2 | ^ 2 + | x - 2 | = 20 ?


Output: 8