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

Example Input: Problem: if 5 a = 3125 , then the value of 5 ( a - 3 ) is :
Example Output: 25

Example Input: Problem: the guests at a football banquet consumed a total of 325 pounds of food . if no individual guest consumed more than 2 pounds of food , what is the minimum number of guests that could have attended the banquet ?
Example Output: 163

Example Input: Problem: how many even number in the range between 15 to 100 inclusive are not divisible by 3
Example Output:
29