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();
        sc.close();

        int time = a;
        int ans = 0;
        while (time <= t) {
            ans += b;
            time += a;
        }
        System.out.println(ans);
    }

} 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();
        sc.close();

        int time = a;
        int ans = 0;
        while (time <= t) {
            ans += b;
            time += a;
        }
        System.out.println(ans);
    }

} 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();
        sc.close();

        int time = a;
        int ans = 0;
        while (time <= t) {
            ans += b;
            time += a;
        }
        System.out.println(ans);
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        int t = sc.nextInt();
        sc.close();

        int time = a;
        int ans = 0;
        while (time <= t) {
            ans += b;
            time += a;
        }
        System.out.println(ans);
    } 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 sc.close() sc.close sc int time = a; time a int ans = 0; ans 0 while (time <= t) {
            ans += b;
            time += a;
        } time <= t time t {
            ans += b;
            time += a;
        } ans += b ans b time += a time a System.out.println(ans) System.out.println System.out System System.out ans 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();
        sc.close();

        int time = a;
        int ans = 0;
        while (time <= t) {
            ans += b;
            time += a;
        }
        System.out.println(ans);
    }

} 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();
        sc.close();

        int time = a;
        int ans = 0;
        while (time <= t) {
            ans += b;
            time += a;
        }
        System.out.println(ans);
    }

} 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();
        sc.close();

        int time = a;
        int ans = 0;
        while (time <= t) {
            ans += b;
            time += a;
        }
        System.out.println(ans);
    }

}
