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();
		float endTime = (float) (t + 0.5);
		int times = (int) (t + 0.5)/a;
		System.out.println(b*times);
	}
}
 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();
		float endTime = (float) (t + 0.5);
		int times = (int) (t + 0.5)/a;
		System.out.println(b*times);
	}
} 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();
		float endTime = (float) (t + 0.5);
		int times = (int) (t + 0.5)/a;
		System.out.println(b*times);
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		float endTime = (float) (t + 0.5);
		int times = (int) (t + 0.5)/a;
		System.out.println(b*times);
	} 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 float endTime = (float) (t + 0.5); endTime (float) (t + 0.5) t 0.5 int times = (int) (t + 0.5)/a; times (int) (t + 0.5)/a (int) (t + 0.5) t 0.5 a System.out.println(b*times) System.out.println System.out System System.out b*times b times 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();
		float endTime = (float) (t + 0.5);
		int times = (int) (t + 0.5)/a;
		System.out.println(b*times);
	}
} 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();
		float endTime = (float) (t + 0.5);
		int times = (int) (t + 0.5)/a;
		System.out.println(b*times);
	}
} 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();
		float endTime = (float) (t + 0.5);
		int times = (int) (t + 0.5)/a;
		System.out.println(b*times);
	}
}

