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

Example Input: Problem: in an election between two candidates , one got 60 % of the total valid votes , 30 % of the votes were invalid . if the total number of votes was 9000 , the number of valid votes that the other candidate got , was :
Example Output: 2520

Example Input: Problem: a 11 meter long wire is cut into two pieces . if the longer piece is then used to form a perimeter of a square , what is the probability that the area of the square will be more than 4 if the original wire was cut at an arbitrary point ?
Example Output: 6 / 11

Example Input: Problem: if x > 3000 , then the value of ( 1.2 x ) / ( 0.5 x - 406 ) is closest to ?
Example Output:
3 /