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

Example Input: Problem: in one alloy there is 12 % chromium while in another alloy it is 8 % . 35 kg of the first alloy was melted together with 40 kg of the second one to form a third alloy . find the percentage of chromium in the new alloy .
Example Output: 9.75 %

Example Input: Problem: there are 2 red chips and 3 blue ones . when arranged in a row , they form a certain color pattern , for example rbrrb . how many color patterns ?
Example Output: e ) 10

Example Input: Problem: 7.515 / 10.02 =
Example Output:
0.7