import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int cntBiscuit = 0;

        int time = A;

        for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        }

        System.out.println(String.valueOf(cntBiscuit));
	}

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

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int cntBiscuit = 0;

        int time = A;

        for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        }

        System.out.println(String.valueOf(cntBiscuit));
	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int cntBiscuit = 0;

        int time = A;

        for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        }

        System.out.println(String.valueOf(cntBiscuit));
	} main {
		Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int cntBiscuit = 0;

        int time = A;

        for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        }

        System.out.println(String.valueOf(cntBiscuit));
	} 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 cntBiscuit = 0; cntBiscuit 0 int time = A; time A for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        } int i = 2 ; int i = 2 ; i 2 time <= T time T i++ i++ i {
        	time = A * i;

        	cntBiscuit += B;
        } {
        	time = A * i;

        	cntBiscuit += B;
        } time = A * i time A * i A i cntBiscuit += B cntBiscuit B System.out.println(String.valueOf(cntBiscuit)) System.out.println System.out System System.out String.valueOf(cntBiscuit) String.valueOf String cntBiscuit String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int cntBiscuit = 0;

        int time = A;

        for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        }

        System.out.println(String.valueOf(cntBiscuit));
	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int cntBiscuit = 0;

        int time = A;

        for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        }

        System.out.println(String.valueOf(cntBiscuit));
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();
        int T = sc.nextInt();

        int cntBiscuit = 0;

        int time = A;

        for(int i = 2 ; time <= T ; i++) {
        	time = A * i;

        	cntBiscuit += B;
        }

        System.out.println(String.valueOf(cntBiscuit));
	}

}