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 sum = 0;
		for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		}
		System.out.println(sum);
		
	}
	

} 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 sum = 0;
		for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		}
		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();
		int T = sc.nextInt();
		int sum = 0;
		for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		}
		System.out.println(sum);
		
	} main {
		Scanner sc = new Scanner(System.in);
		int  A = sc.nextInt();
		int B = sc.nextInt();
		int T = sc.nextInt();
		int sum = 0;
		for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		}
		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 int T = sc.nextInt(); T sc.nextInt() sc.nextInt sc int sum = 0; sum 0 for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		} int i = 1; int i = 1; i 1 i<=T i T i++ i++ i {
			if(i%A==0) {
				sum += B;
			}
			
			
		} {
			if(i%A==0) {
				sum += B;
			}
			
			
		} if(i%A==0) {
				sum += B;
			} i%A==0 i%A i A 0 {
				sum += B;
			} sum += B sum B 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();
		int T = sc.nextInt();
		int sum = 0;
		for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		}
		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();
		int T = sc.nextInt();
		int sum = 0;
		for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		}
		System.out.println(sum);
		
	}
	

} 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 sum = 0;
		for(int i = 1; i<=T; i++) {
			if(i%A==0) {
				sum += B;
			}
			
			
		}
		System.out.println(sum);
		
	}
	

}
