import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
	    int A = scanner.nextInt();
	    int B = scanner.nextInt();
	    int T = scanner.nextInt();
	    
	    int time = A;
	    int count = 0;
	    while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    }
	    System.out.print(count);
	}
	    
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
	    int A = scanner.nextInt();
	    int B = scanner.nextInt();
	    int T = scanner.nextInt();
	    
	    int time = A;
	    int count = 0;
	    while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    }
	    System.out.print(count);
	}
	    
} Main public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
	    int A = scanner.nextInt();
	    int B = scanner.nextInt();
	    int T = scanner.nextInt();
	    
	    int time = A;
	    int count = 0;
	    while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    }
	    System.out.print(count);
	} main {
		Scanner scanner = new Scanner(System.in);
	    int A = scanner.nextInt();
	    int B = scanner.nextInt();
	    int T = scanner.nextInt();
	    
	    int time = A;
	    int count = 0;
	    while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    }
	    System.out.print(count);
	} Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int A = scanner.nextInt(); A scanner.nextInt() scanner.nextInt scanner int B = scanner.nextInt(); B scanner.nextInt() scanner.nextInt scanner int T = scanner.nextInt(); T scanner.nextInt() scanner.nextInt scanner int time = A; time A int count = 0; count 0 while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    } time<T+0.5 time T+0.5 T 0.5 {
	    	count += B;
	    	time+=A;
	    } count += B count B time+=A time A System.out.print(count) System.out.print System.out System System.out count String[] args args public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
	    int A = scanner.nextInt();
	    int B = scanner.nextInt();
	    int T = scanner.nextInt();
	    
	    int time = A;
	    int count = 0;
	    while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    }
	    System.out.print(count);
	}
	    
} public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
	    int A = scanner.nextInt();
	    int B = scanner.nextInt();
	    int T = scanner.nextInt();
	    
	    int time = A;
	    int count = 0;
	    while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    }
	    System.out.print(count);
	}
	    
} Main
import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
	    int A = scanner.nextInt();
	    int B = scanner.nextInt();
	    int T = scanner.nextInt();
	    
	    int time = A;
	    int count = 0;
	    while (time<T+0.5) {
	    	count += B;
	    	time+=A;
	    }
	    System.out.print(count);
	}
	    
}
