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

Example Input: Problem: a and b can together finish a work in 40 days . they worked together for 10 days and then b left . after another 15 days , a finished the remaining work . in how many days a alone can finish the job ?
Example Output: 2

Example Input: Problem: 475.124 x 15.98 ÷ 8.001 + 33.33 = ?
Example Output: 983.578

Example Input: Problem: there are 750 male and female participants in a meeting . half the female participants and one - quarterof the male participants are democrats . one - third of all the participants are democrats . how many of the democrats are female ?
Example Output:
125