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

Input: Consider Input: Problem: find the value of x : 2 x 4 .

Output: - 2,2

Input: Consider Input: Problem: when the price of a product was decreased by 20 % , the number sold increased by 60 % . what was the effect on the total revenue ?

Output: 28 %

Input: Consider Input: Problem: in a garden , there are 10 rows and 13 columns of mango trees . the distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden . the length of the garden is
Output: 26 m