Problem:
Score : 100 points

Problem Statement

A biscuit making machine produces B biscuits at the following moments: A seconds, 2A seconds, 3A seconds and each subsequent multiple of A seconds after activation.

Find the total number of biscuits produced within T + 0.5 seconds after activation.

Constraints

All values in input are integers.

1 \leq A, B, T \leq 20

Input

Input is given from Standard Input in the following format:

A B T

Output

Print the total number of biscuits produced within T + 0.5 seconds after activation.

Sample Input 1

3 5 7

Sample Output 1

10

Five biscuits will be produced three seconds after activation.

Another five biscuits will be produced six seconds after activation.

Thus, a total of ten biscuits will be produced within 7.5 seconds after activation.

Sample Input 2

3 2 9

Sample Output 2

6

Sample Input 3

20 20 19

Sample Output 3

0

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;

namespace ABC125
{
    class Program
    {
        static void Main(string[] args)
        {
            var read = Console.ReadLine().Split(' ');
            var A = int.Parse(read[0]);
            var B = int.Parse(read[1]);
            var T = int.Parse(read[2]);
            long biscuits = 0;

            for(int i = A ; i <= T ; i += A)
            {
                biscuits += B;
            }
        Console.WriteLine(biscuits);
        }
    }
}