import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		double v = t + 0.5;

		int p = 0;
		p = (int)v / a;
		int r = 0;
		r = (int)p * b;

		System.out.println(r);

	}

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

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		double v = t + 0.5;

		int p = 0;
		p = (int)v / a;
		int r = 0;
		r = (int)p * b;

		System.out.println(r);

	}

} Main public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		double v = t + 0.5;

		int p = 0;
		p = (int)v / a;
		int r = 0;
		r = (int)p * b;

		System.out.println(r);

	} main {
		// TODO 自動生成されたメソッド・スタブ

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		double v = t + 0.5;

		int p = 0;
		p = (int)v / a;
		int r = 0;
		r = (int)p * b;

		System.out.println(r);

	} 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 double v = t + 0.5; v t + 0.5 t 0.5 int p = 0; p 0 p = (int)v / a p (int)v / a (int)v a int r = 0; r 0 r = (int)p * b r (int)p * b (int)p b System.out.println(r) System.out.println System.out System System.out r String[] args args public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		double v = t + 0.5;

		int p = 0;
		p = (int)v / a;
		int r = 0;
		r = (int)p * b;

		System.out.println(r);

	}

} public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		double v = t + 0.5;

		int p = 0;
		p = (int)v / a;
		int r = 0;
		r = (int)p * b;

		System.out.println(r);

	}

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

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();

		double v = t + 0.5;

		int p = 0;
		p = (int)v / a;
		int r = 0;
		r = (int)p * b;

		System.out.println(r);

	}

}
