import java.util.Scanner;

public class Main {
	public static void main(String ... args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		int count = 0;
		while (a * count <= t) {
			count++;
		}
		System.out.println((count - 1) * b);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String ... args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		int count = 0;
		while (a * count <= t) {
			count++;
		}
		System.out.println((count - 1) * b);
	}
} Main public static void main(String ... args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		int count = 0;
		while (a * count <= t) {
			count++;
		}
		System.out.println((count - 1) * b);
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		int count = 0;
		while (a * count <= t) {
			count++;
		}
		System.out.println((count - 1) * b);
	} 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 count = 0; count 0 while (a * count <= t) {
			count++;
		} a * count <= t a * count a count t {
			count++;
		} count++ count System.out.println((count - 1) * b) System.out.println System.out System System.out (count - 1) * b (count - 1) count 1 b String ... args args public class Main {
	public static void main(String ... args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		int count = 0;
		while (a * count <= t) {
			count++;
		}
		System.out.println((count - 1) * b);
	}
} public class Main {
	public static void main(String ... args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		int count = 0;
		while (a * count <= t) {
			count++;
		}
		System.out.println((count - 1) * b);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String ... args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
		int count = 0;
		while (a * count <= t) {
			count++;
		}
		System.out.println((count - 1) * b);
	}
}
