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 Python (2.7.6) (judge verdict: Accepted)

from sys import stdin

def calc(data):
    sum = 0
    current_time = int(data[0])
    counter = 1
    while current_time < int(data[2]) + 0.5:
        sum += int(data[1])
        counter += 1
        current_time = int(data[0]) * counter
    return sum

if __name__ == '__main__':
    input = stdin.readline().rstrip()
    input_array = input.split(" ")
    print calc(input_array)