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

Example Input: Problem: if one - third of one - fourth of a number is 18 , then 3 - tenth of that number is : a . 35
Example Output: 64.8

Example Input: Problem: . 005 / ? = . 01
Example Output: . 5

Example Input: Problem: in a certain lottery , the probability that a number between 1 and 15 , inclusive , is drawn is 1 / 3 . if the probability that a number 1 or larger is drawn is 2 / 3 , what is the probability that a number less than or equal to 15 is drawn ?
Example Output:
2 / 3