
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int b=sc.nextInt();
		int time=sc.nextInt();
		int temp = (int) (time+0.5)/x;
		int number=temp*b;
      if(time<x) number=0;
		System.out.println(number);

	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int b=sc.nextInt();
		int time=sc.nextInt();
		int temp = (int) (time+0.5)/x;
		int number=temp*b;
      if(time<x) number=0;
		System.out.println(number);

	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int b=sc.nextInt();
		int time=sc.nextInt();
		int temp = (int) (time+0.5)/x;
		int number=temp*b;
      if(time<x) number=0;
		System.out.println(number);

	} main {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int b=sc.nextInt();
		int time=sc.nextInt();
		int temp = (int) (time+0.5)/x;
		int number=temp*b;
      if(time<x) number=0;
		System.out.println(number);

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int b=sc.nextInt(); b sc.nextInt() sc.nextInt sc int time=sc.nextInt(); time sc.nextInt() sc.nextInt sc int temp = (int) (time+0.5)/x; temp (int) (time+0.5)/x (int) (time+0.5) time 0.5 x int number=temp*b; number temp*b temp b if(time<x) number=0; time<x time x number=0 number 0 System.out.println(number) System.out.println System.out System System.out number String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int b=sc.nextInt();
		int time=sc.nextInt();
		int temp = (int) (time+0.5)/x;
		int number=temp*b;
      if(time<x) number=0;
		System.out.println(number);

	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int b=sc.nextInt();
		int time=sc.nextInt();
		int temp = (int) (time+0.5)/x;
		int number=temp*b;
      if(time<x) number=0;
		System.out.println(number);

	}
} Main

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		int b=sc.nextInt();
		int time=sc.nextInt();
		int temp = (int) (time+0.5)/x;
		int number=temp*b;
      if(time<x) number=0;
		System.out.println(number);

	}
}
