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;
        int n = 1;
        while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        }
        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;
        int n = 1;
        while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        }
        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;
        int n = 1;
        while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        }
        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;
        int n = 1;
        while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        }
        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 int n = 1; n 1 while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        } true {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        } if ((t + 0.5) < a * n) {
                break;
            } (t + 0.5) < a * n (t + 0.5) t 0.5 a * n a n {
                break;
            } break; n++ n count += b count b 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;
        int n = 1;
        while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        }
        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;
        int n = 1;
        while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        }
        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;
        int n = 1;
        while (true) {
            if ((t + 0.5) < a * n) {
                break;
            }
            n++;
            count += b;

        }
        System.out.println(count);
    }


}
