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 Go (1.6) (judge verdict: Accepted)

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func stdioText(s *bufio.Scanner) string {
	s.Scan()
	return s.Text()
}

func stdioNum(s *bufio.Scanner) int {
	num, _ := strconv.Atoi(stdioText(s))
	return num
}

func stdioNums(s *bufio.Scanner) []int {
	var nums []int
	for _, v := range strings.Split(stdioText(s), " ") {
		i, _ := strconv.Atoi(v)
		nums = append(nums, i)
	}
	return nums
}

func main()  {
	s := bufio.NewScanner(os.Stdin)
	nums := stdioNums(s)
	fmt.Println(nums[2] / nums[0] * nums[1])
}