import 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();
        double t = sc.nextInt();
        int sum = 0;
        int time = a;

        while( time < t+0.5){
            sum +=b;
            time += a;
            
        }
        System.out.println(sum);
    }

} import java.util.*; util.* java public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        double t = sc.nextInt();
        int sum = 0;
        int time = a;

        while( time < t+0.5){
            sum +=b;
            time += a;
            
        }
        System.out.println(sum);
    }

} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        double t = sc.nextInt();
        int sum = 0;
        int time = a;

        while( time < t+0.5){
            sum +=b;
            time += a;
            
        }
        System.out.println(sum);
    } main {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        double t = sc.nextInt();
        int sum = 0;
        int time = a;

        while( time < t+0.5){
            sum +=b;
            time += a;
            
        }
        System.out.println(sum);
    } 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 double t = sc.nextInt(); t sc.nextInt() sc.nextInt sc int sum = 0; sum 0 int time = a; time a while( time < t+0.5){
            sum +=b;
            time += a;
            
        } time < t+0.5 time t+0.5 t 0.5 {
            sum +=b;
            time += a;
            
        } sum +=b sum b time += a time a System.out.println(sum) System.out.println System.out System System.out sum 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();
        double t = sc.nextInt();
        int sum = 0;
        int time = a;

        while( time < t+0.5){
            sum +=b;
            time += a;
            
        }
        System.out.println(sum);
    }

} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        double t = sc.nextInt();
        int sum = 0;
        int time = a;

        while( time < t+0.5){
            sum +=b;
            time += a;
            
        }
        System.out.println(sum);
    }

} Main
import 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();
        double t = sc.nextInt();
        int sum = 0;
        int time = a;

        while( time < t+0.5){
            sum +=b;
            time += a;
            
        }
        System.out.println(sum);
    }

}
