import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		String[] spl = s.split(" ");
		int A = Integer.parseInt(spl[0]);
		int B = Integer.parseInt(spl[1]);
		int T = Integer.parseInt(spl[2]);
		
		int bis = 0;
		
		for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		}
		System.out.println(bis);

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		String[] spl = s.split(" ");
		int A = Integer.parseInt(spl[0]);
		int B = Integer.parseInt(spl[1]);
		int T = Integer.parseInt(spl[2]);
		
		int bis = 0;
		
		for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		}
		System.out.println(bis);

	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		String[] spl = s.split(" ");
		int A = Integer.parseInt(spl[0]);
		int B = Integer.parseInt(spl[1]);
		int T = Integer.parseInt(spl[2]);
		
		int bis = 0;
		
		for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		}
		System.out.println(bis);

	} main {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		String[] spl = s.split(" ");
		int A = Integer.parseInt(spl[0]);
		int B = Integer.parseInt(spl[1]);
		int T = Integer.parseInt(spl[2]);
		
		int bis = 0;
		
		for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		}
		System.out.println(bis);

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.nextLine(); s sc.nextLine() sc.nextLine sc String[] spl = s.split(" "); spl s.split(" ") s.split s " " int A = Integer.parseInt(spl[0]); A Integer.parseInt(spl[0]) Integer.parseInt Integer spl[0] spl 0 int B = Integer.parseInt(spl[1]); B Integer.parseInt(spl[1]) Integer.parseInt Integer spl[1] spl 1 int T = Integer.parseInt(spl[2]); T Integer.parseInt(spl[2]) Integer.parseInt Integer spl[2] spl 2 int bis = 0; bis 0 for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		} int i = 1; int i = 1; i 1 i < T + 1 i T + 1 T 1 i++ i++ i {
			if(A * i < T + 1){
				bis += B;
			}
		} {
			if(A * i < T + 1){
				bis += B;
			}
		} if(A * i < T + 1){
				bis += B;
			} A * i < T + 1 A * i A i T + 1 T 1 {
				bis += B;
			} bis += B bis B System.out.println(bis) System.out.println System.out System System.out bis String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		String[] spl = s.split(" ");
		int A = Integer.parseInt(spl[0]);
		int B = Integer.parseInt(spl[1]);
		int T = Integer.parseInt(spl[2]);
		
		int bis = 0;
		
		for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		}
		System.out.println(bis);

	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		String[] spl = s.split(" ");
		int A = Integer.parseInt(spl[0]);
		int B = Integer.parseInt(spl[1]);
		int T = Integer.parseInt(spl[2]);
		
		int bis = 0;
		
		for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		}
		System.out.println(bis);

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.nextLine();
		String[] spl = s.split(" ");
		int A = Integer.parseInt(spl[0]);
		int B = Integer.parseInt(spl[1]);
		int T = Integer.parseInt(spl[2]);
		
		int bis = 0;
		
		for(int i = 1;i < T + 1;i++){
			if(A * i < T + 1){
				bis += B;
			}
		}
		System.out.println(bis);

	}

}