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

Input: Consider Input: Problem: a swimmer can swim in still water at 4 km / h . if the speed of the water current is 2 km / h , how many hours will the swimmer take to swim against the current for 5 km ?

Output: 2.5


Input: Consider Input: Problem: john invests $ x at the semi - annual constant compounded rate of 2 percent and also does $ 20,000 at the quarterly constant compounded rate of 4 percent . if the interests are the same after 1 year , what is the value of x ? ?

Output: 40,402


Input: Consider Input: Problem: if m is an integer such that ( - 2 ) ^ 2 m = 2 ^ ( 6 - m ) then m = ?


Output: 2