

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		int cookies = 0;
		int next = a;

		while(next < t+0.5){
			cookies += b;
			next += a;
		}

		System.out.println(cookies);
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		int cookies = 0;
		int next = a;

		while(next < t+0.5){
			cookies += b;
			next += a;
		}

		System.out.println(cookies);
	}

} Main public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		int cookies = 0;
		int next = a;

		while(next < t+0.5){
			cookies += b;
			next += a;
		}

		System.out.println(cookies);
	} main {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		int cookies = 0;
		int next = a;

		while(next < t+0.5){
			cookies += b;
			next += a;
		}

		System.out.println(cookies);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int t = sc.nextInt(); t sc.nextInt() sc.nextInt sc int cookies = 0; cookies 0 int next = a; next a while(next < t+0.5){
			cookies += b;
			next += a;
		} next < t+0.5 next t+0.5 t 0.5 {
			cookies += b;
			next += a;
		} cookies += b cookies b next += a next a System.out.println(cookies) System.out.println System.out System System.out cookies String[] args args public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		int cookies = 0;
		int next = a;

		while(next < t+0.5){
			cookies += b;
			next += a;
		}

		System.out.println(cookies);
	}

} public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		int cookies = 0;
		int next = a;

		while(next < t+0.5){
			cookies += b;
			next += a;
		}

		System.out.println(cookies);
	}

} Main


import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		int cookies = 0;
		int next = a;

		while(next < t+0.5){
			cookies += b;
			next += a;
		}

		System.out.println(cookies);
	}

}
