import java.util.Scanner;

public class Main {

	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		double a=sc.nextDouble();
		double b=sc.nextDouble();
		double t=sc.nextDouble();
		int n=0;
		sc.close();
		for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		}
		System.out.println(n);
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		double a=sc.nextDouble();
		double b=sc.nextDouble();
		double t=sc.nextDouble();
		int n=0;
		sc.close();
		for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		}
		System.out.println(n);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		double a=sc.nextDouble();
		double b=sc.nextDouble();
		double t=sc.nextDouble();
		int n=0;
		sc.close();
		for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		}
		System.out.println(n);
	} main {
		Scanner sc = new Scanner(System.in);
		double a=sc.nextDouble();
		double b=sc.nextDouble();
		double t=sc.nextDouble();
		int n=0;
		sc.close();
		for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		}
		System.out.println(n);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) double a=sc.nextDouble(); a sc.nextDouble() sc.nextDouble sc double b=sc.nextDouble(); b sc.nextDouble() sc.nextDouble sc double t=sc.nextDouble(); t sc.nextDouble() sc.nextDouble sc int n=0; n 0 sc.close() sc.close sc for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		} double i=a; double i=a; i a i<t+0.5 i t+0.5 t 0.5 i=i+a i=i+a i i+a i a {
			n +=b;
		} {
			n +=b;
		} n +=b n b System.out.println(n) System.out.println System.out System System.out n String[] args args public class Main {

	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		double a=sc.nextDouble();
		double b=sc.nextDouble();
		double t=sc.nextDouble();
		int n=0;
		sc.close();
		for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		}
		System.out.println(n);
	}
} public class Main {

	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		double a=sc.nextDouble();
		double b=sc.nextDouble();
		double t=sc.nextDouble();
		int n=0;
		sc.close();
		for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		}
		System.out.println(n);
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		double a=sc.nextDouble();
		double b=sc.nextDouble();
		double t=sc.nextDouble();
		int n=0;
		sc.close();
		for(double i=a;i<t+0.5;i=i+a){
			n +=b;
		}
		System.out.println(n);
	}
}
