import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str[] = br.readLine().split(" ");

		int a = Integer.parseInt(str[0]);
		int b = Integer.parseInt(str[1]);
		int t = Integer.parseInt(str[2]);

		int time = 0;
		int ans = 0;

		while (time + a <= t) {
			time += a;
			ans += b;
		}

		System.out.println(ans);
	}
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.Arrays; Arrays java.util public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str[] = br.readLine().split(" ");

		int a = Integer.parseInt(str[0]);
		int b = Integer.parseInt(str[1]);
		int t = Integer.parseInt(str[2]);

		int time = 0;
		int ans = 0;

		while (time + a <= t) {
			time += a;
			ans += b;
		}

		System.out.println(ans);
	}
} Main public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str[] = br.readLine().split(" ");

		int a = Integer.parseInt(str[0]);
		int b = Integer.parseInt(str[1]);
		int t = Integer.parseInt(str[2]);

		int time = 0;
		int ans = 0;

		while (time + a <= t) {
			time += a;
			ans += b;
		}

		System.out.println(ans);
	} main {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str[] = br.readLine().split(" ");

		int a = Integer.parseInt(str[0]);
		int b = Integer.parseInt(str[1]);
		int t = Integer.parseInt(str[2]);

		int time = 0;
		int ans = 0;

		while (time + a <= t) {
			time += a;
			ans += b;
		}

		System.out.println(ans);
	} BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) String str[] = br.readLine().split(" "); str br.readLine().split(" ") br.readLine().split br.readLine() br.readLine br " " int a = Integer.parseInt(str[0]); a Integer.parseInt(str[0]) Integer.parseInt Integer str[0] str 0 int b = Integer.parseInt(str[1]); b Integer.parseInt(str[1]) Integer.parseInt Integer str[1] str 1 int t = Integer.parseInt(str[2]); t Integer.parseInt(str[2]) Integer.parseInt Integer str[2] str 2 int time = 0; time 0 int ans = 0; ans 0 while (time + a <= t) {
			time += a;
			ans += b;
		} time + a <= t time + a time a t {
			time += a;
			ans += b;
		} time += a time a ans += b ans b System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str[] = br.readLine().split(" ");

		int a = Integer.parseInt(str[0]);
		int b = Integer.parseInt(str[1]);
		int t = Integer.parseInt(str[2]);

		int time = 0;
		int ans = 0;

		while (time + a <= t) {
			time += a;
			ans += b;
		}

		System.out.println(ans);
	}
} public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str[] = br.readLine().split(" ");

		int a = Integer.parseInt(str[0]);
		int b = Integer.parseInt(str[1]);
		int t = Integer.parseInt(str[2]);

		int time = 0;
		int ans = 0;

		while (time + a <= t) {
			time += a;
			ans += b;
		}

		System.out.println(ans);
	}
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String str[] = br.readLine().split(" ");

		int a = Integer.parseInt(str[0]);
		int b = Integer.parseInt(str[1]);
		int t = Integer.parseInt(str[2]);

		int time = 0;
		int ans = 0;

		while (time + a <= t) {
			time += a;
			ans += b;
		}

		System.out.println(ans);
	}
}
