
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	} main {
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String[] nyu=sc.nextLine().split(" "); nyu sc.nextLine().split(" ") sc.nextLine().split sc.nextLine() sc.nextLine sc " " int A=Integer.parseInt(nyu[0]); A Integer.parseInt(nyu[0]) Integer.parseInt Integer nyu[0] nyu 0 int B=Integer.parseInt(nyu[1]); B Integer.parseInt(nyu[1]) Integer.parseInt Integer nyu[1] nyu 1 int T=Integer.parseInt(nyu[2]); T Integer.parseInt(nyu[2]) Integer.parseInt Integer nyu[2] nyu 2 int count=0; count 0 int num=0; num 0 int ryo=0; ryo 0 while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
} true {
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
} if(count>T)break; count>T count T break; if(count%A==0 && count!=0)ryo+=B; count%A==0 && count!=0 count%A==0 count%A count A 0 count!=0 count 0 ryo+=B ryo B count++ count System.out.println(ryo) System.out.println System.out System System.out ryo String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	}
} Main

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      String[] nyu=sc.nextLine().split(" ");
   //  String nyu=sc.nextLine();

int A=Integer.parseInt(nyu[0]);
int B=Integer.parseInt(nyu[1]);
int T=Integer.parseInt(nyu[2]);


int count=0;
int num=0;
int ryo=0;
while(true){
if(count>T)break;

if(count%A==0 && count!=0)ryo+=B;
//System.out.println(ryo+"--"+count);
count++;
}

System.out.println(ryo);



	}
}