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 ans = 0;
		
		for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		}
		
		System.out.println(ans);
		sc.close();
	}

} 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 ans = 0;
		
		for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		}
		
		System.out.println(ans);
		sc.close();
	}

} 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 ans = 0;
		
		for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		}
		
		System.out.println(ans);
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		
		int ans = 0;
		
		for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		}
		
		System.out.println(ans);
		sc.close();
	} 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 ans = 0; ans 0 for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		} int i = 1; int i = 1; i 1 i <= t i t i++ i++ i {
			if (i % a == 0) {
				ans += b;
			}
		} {
			if (i % a == 0) {
				ans += b;
			}
		} if (i % a == 0) {
				ans += b;
			} i % a == 0 i % a i a 0 {
				ans += b;
			} ans += b ans b System.out.println(ans) System.out.println System.out System System.out ans sc.close() sc.close sc 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 ans = 0;
		
		for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		}
		
		System.out.println(ans);
		sc.close();
	}

} 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 ans = 0;
		
		for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		}
		
		System.out.println(ans);
		sc.close();
	}

} 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 ans = 0;
		
		for (int i = 1; i <= t; i++) {
			if (i % a == 0) {
				ans += b;
			}
		}
		
		System.out.println(ans);
		sc.close();
	}

}
