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

Input: Consider Input: Problem: a merchant sells an item at a 20 % discount , but still makes a gross profit of 20 percent of the cost . what percent of the cost would the gross profit on the item have been if it had been sold without the discount ?

Output: 50 %


Input: Consider Input: Problem: 10 ^ ( 600 ) ã · 10 ^ ( 580 ) = ?

Output: 10 ^ 20


Input: Consider Input: Problem: a cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.2 m and its walls are 5 cm thick . the thickness of the bottom is :


Output: 2 dm