import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int x = A;
		int y = 0;
		
		while(T + 0.5 > x){
			x += A;
			y += B;
		}
		System.out.println(y);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int x = A;
		int y = 0;
		
		while(T + 0.5 > x){
			x += A;
			y += B;
		}
		System.out.println(y);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int x = A;
		int y = 0;
		
		while(T + 0.5 > x){
			x += A;
			y += B;
		}
		System.out.println(y);
	} main {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int x = A;
		int y = 0;
		
		while(T + 0.5 > x){
			x += A;
			y += B;
		}
		System.out.println(y);
	} 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 x = A; x A int y = 0; y 0 while(T + 0.5 > x){
			x += A;
			y += B;
		} T + 0.5 > x T + 0.5 T 0.5 x {
			x += A;
			y += B;
		} x += A x A y += B y B System.out.println(y) System.out.println System.out System System.out y String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int x = A;
		int y = 0;
		
		while(T + 0.5 > x){
			x += A;
			y += B;
		}
		System.out.println(y);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int x = A;
		int y = 0;
		
		while(T + 0.5 > x){
			x += A;
			y += B;
		}
		System.out.println(y);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int x = A;
		int y = 0;
		
		while(T + 0.5 > x){
			x += A;
			y += B;
		}
		System.out.println(y);
	}
}
