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

Ex Input:
Problem: from a pack of cards , two cards are drawn one after the other , with replacement . what is the probability that the first card is a black card and the second card is a king ?

Ex Output:
1 / 26


Ex Input:
Problem: one half of a two digit number exceeds its one third by 7 . what is the sum of the digits of the number ?

Ex Output:
e ) 1


Ex Input:
Problem: car dealership x , the total profit from sales increased by 30 percent over the previous years , while the number of cars sold decreased by 30 percent over the previous years . approximately what was the average percent increase in profit per car over the previous year .

Ex Output:

85.71