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 count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		}

	} 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 count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		}

	} 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 count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		} main {

			Scanner sc = new Scanner(System.in);

			int A = sc.nextInt();
			int B = sc.nextInt();
			int T = sc.nextInt();

			int count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		} 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 count = 0; count 0 if( A > T ) {
				count = 0;
				System.out.println(count);
			} A > T A T {
				count = 0;
				System.out.println(count);
			} count = 0 count 0 System.out.println(count) System.out.println System.out System System.out count if( A == T ) {
				count = B;
				System.out.println(count);
			} A == T A T {
				count = B;
				System.out.println(count);
			} count = B count B System.out.println(count) System.out.println System.out System System.out count if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			} A < T A T {
				count = B * (T / A);
				System.out.println(count);
			} count = B * (T / A) count B * (T / A) B (T / A) T A System.out.println(count) System.out.println System.out System System.out count 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 count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		}

	} 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 count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		}

	} 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 count = 0;

			if( A > T ) {
				count = 0;
				System.out.println(count);
			}
			if( A == T ) {
				count = B;
				System.out.println(count);
			}
			if( A < T ){
				count = B * (T / A);
				System.out.println(count);
			}
		}

	}