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

Example Input: Problem: during a car trip , maria stopped to rest after she traveled 1 / 2 of the total distance to her destination . she stopped again after she traveled 1 / 4 of the distance remaining between her first stop and her destination , and then she drove the remaining 105 miles to her detination . what was the total distance , in miles from maria ' s starting point to her destination ?
Example Output: 280

Example Input: Problem: if log 2 = 0.3010 and log 3 = 0.4771 then the value of log 4.5 is :
Example Output: 0.6532

Example Input: Problem: the contents of a certain box consist of 20 apples and 30 oranges . how many oranges must be added to the box so that exactly 20 % of the pieces of fruit in the box will be apples ?
Example Output:
50