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

Example Input: Problem: three 7 faced dice are thrown together . the probability that all the three show the same number on them is ?
Example Output: 1 / 49

Example Input: Problem: by selling an article at rs . 600 , a shopkeeper makes a profit of 25 % . at what price should he sell the article so as to make a loss of 25 % ?
Example Output: s . 360

Example Input: Problem: 17200 x 223 + 17200 x 77 = ?
Example Output:
5160000