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

Example Input: Problem: a , b , c , d , e , f , g , h sitting in a row what is the probability that a , b , c sitting together ?
Example Output: 3 / 28

Example Input: Problem: a train 800 m long can cross a pole in 10 sec and then find the speed of the train ?
Example Output: 28

Example Input: Problem: a rectangular photograph is surrounded by a border that is 3 inch wide on each side . the total area of the photograph and the border is m square inches . if the border had been 6 inches wide on each side , the total area would have been ( m + 178 ) square inches . what is the perimeter of the photograph , in inches ?
Example Output:
2