import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	int a= scan.nextInt();
      	int b= scan.nextInt();
      	int t= scan.nextInt();
      	int num = 0;
      	while(t>=a){
          	t -= a;
        	num++;
        }
        System.out.println(num*b);
    }
} import java.util.*; util.* java class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	int a= scan.nextInt();
      	int b= scan.nextInt();
      	int t= scan.nextInt();
      	int num = 0;
      	while(t>=a){
          	t -= a;
        	num++;
        }
        System.out.println(num*b);
    }
} Main public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	int a= scan.nextInt();
      	int b= scan.nextInt();
      	int t= scan.nextInt();
      	int num = 0;
      	while(t>=a){
          	t -= a;
        	num++;
        }
        System.out.println(num*b);
    } main {
    	Scanner scan = new Scanner(System.in);
      	int a= scan.nextInt();
      	int b= scan.nextInt();
      	int t= scan.nextInt();
      	int num = 0;
      	while(t>=a){
          	t -= a;
        	num++;
        }
        System.out.println(num*b);
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int a= scan.nextInt(); a scan.nextInt() scan.nextInt scan int b= scan.nextInt(); b scan.nextInt() scan.nextInt scan int t= scan.nextInt(); t scan.nextInt() scan.nextInt scan int num = 0; num 0 while(t>=a){
          	t -= a;
        	num++;
        } t>=a t a {
          	t -= a;
        	num++;
        } t -= a t a num++ num System.out.println(num*b) System.out.println System.out System System.out num*b num b String[] args args
import java.util.*;
class Main{
	public static void main(String[] args){
    	Scanner scan = new Scanner(System.in);
      	int a= scan.nextInt();
      	int b= scan.nextInt();
      	int t= scan.nextInt();
      	int num = 0;
      	while(t>=a){
          	t -= a;
        	num++;
        }
        System.out.println(num*b);
    }
}