import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;

public class Main {

	public static void main(String[] args) throws IOException {
		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		BufferedReader in = new BufferedReader(reader);
		String[] tokens = in.readLine().split(" ");
		int A = Integer.parseInt(tokens[0]);
		int B = Integer.parseInt(tokens[1]);
		int T = Integer.parseInt(tokens[2]);

		in.close();

		double t = (double) T + 0.5;
		int result = (int) Math.floor(t / (double) A);
		System.out.println(result * B);
	}

} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.nio.charset.StandardCharsets; StandardCharsets java.nio.charset public class Main {

	public static void main(String[] args) throws IOException {
		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		BufferedReader in = new BufferedReader(reader);
		String[] tokens = in.readLine().split(" ");
		int A = Integer.parseInt(tokens[0]);
		int B = Integer.parseInt(tokens[1]);
		int T = Integer.parseInt(tokens[2]);

		in.close();

		double t = (double) T + 0.5;
		int result = (int) Math.floor(t / (double) A);
		System.out.println(result * B);
	}

} Main public static void main(String[] args) throws IOException {
		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		BufferedReader in = new BufferedReader(reader);
		String[] tokens = in.readLine().split(" ");
		int A = Integer.parseInt(tokens[0]);
		int B = Integer.parseInt(tokens[1]);
		int T = Integer.parseInt(tokens[2]);

		in.close();

		double t = (double) T + 0.5;
		int result = (int) Math.floor(t / (double) A);
		System.out.println(result * B);
	} main {
		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		BufferedReader in = new BufferedReader(reader);
		String[] tokens = in.readLine().split(" ");
		int A = Integer.parseInt(tokens[0]);
		int B = Integer.parseInt(tokens[1]);
		int T = Integer.parseInt(tokens[2]);

		in.close();

		double t = (double) T + 0.5;
		int result = (int) Math.floor(t / (double) A);
		System.out.println(result * B);
	} InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8); reader new InputStreamReader(System.in, StandardCharsets.UTF_8) BufferedReader in = new BufferedReader(reader); in new BufferedReader(reader) String[] tokens = in.readLine().split(" "); tokens in.readLine().split(" ") in.readLine().split in.readLine() in.readLine in " " int A = Integer.parseInt(tokens[0]); A Integer.parseInt(tokens[0]) Integer.parseInt Integer tokens[0] tokens 0 int B = Integer.parseInt(tokens[1]); B Integer.parseInt(tokens[1]) Integer.parseInt Integer tokens[1] tokens 1 int T = Integer.parseInt(tokens[2]); T Integer.parseInt(tokens[2]) Integer.parseInt Integer tokens[2] tokens 2 in.close() in.close in double t = (double) T + 0.5; t (double) T + 0.5 (double) T 0.5 int result = (int) Math.floor(t / (double) A); result (int) Math.floor(t / (double) A) Math.floor Math t / (double) A t (double) A System.out.println(result * B) System.out.println System.out System System.out result * B result B String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		BufferedReader in = new BufferedReader(reader);
		String[] tokens = in.readLine().split(" ");
		int A = Integer.parseInt(tokens[0]);
		int B = Integer.parseInt(tokens[1]);
		int T = Integer.parseInt(tokens[2]);

		in.close();

		double t = (double) T + 0.5;
		int result = (int) Math.floor(t / (double) A);
		System.out.println(result * B);
	}

} public class Main {

	public static void main(String[] args) throws IOException {
		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		BufferedReader in = new BufferedReader(reader);
		String[] tokens = in.readLine().split(" ");
		int A = Integer.parseInt(tokens[0]);
		int B = Integer.parseInt(tokens[1]);
		int T = Integer.parseInt(tokens[2]);

		in.close();

		double t = (double) T + 0.5;
		int result = (int) Math.floor(t / (double) A);
		System.out.println(result * B);
	}

} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;

public class Main {

	public static void main(String[] args) throws IOException {
		InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
		BufferedReader in = new BufferedReader(reader);
		String[] tokens = in.readLine().split(" ");
		int A = Integer.parseInt(tokens[0]);
		int B = Integer.parseInt(tokens[1]);
		int T = Integer.parseInt(tokens[2]);

		in.close();

		double t = (double) T + 0.5;
		int result = (int) Math.floor(t / (double) A);
		System.out.println(result * B);
	}

}
