import 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 = (int) Math.round(sc.nextInt() + 0.5);

        int b = 0;
        for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        }

        System.out.println(b);
    }
} import java.util.*; util.* java 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 = (int) Math.round(sc.nextInt() + 0.5);

        int b = 0;
        for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        }

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

        int T = (int) Math.round(sc.nextInt() + 0.5);

        int b = 0;
        for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        }

        System.out.println(b);
    } main {
        Scanner sc = new Scanner(System.in);
        int A = sc.nextInt();
        int B = sc.nextInt();

        int T = (int) Math.round(sc.nextInt() + 0.5);

        int b = 0;
        for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        }

        System.out.println(b);
    } 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 = (int) Math.round(sc.nextInt() + 0.5); T (int) Math.round(sc.nextInt() + 0.5) Math.round Math sc.nextInt() + 0.5 sc.nextInt() sc.nextInt sc 0.5 int b = 0; b 0 for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        } int t = 1; int t = 1; t 1 t < T t T t++ t++ t {
            if (t % A == 0) {
                b += B;
            }
        } {
            if (t % A == 0) {
                b += B;
            }
        } if (t % A == 0) {
                b += B;
            } t % A == 0 t % A t A 0 {
                b += B;
            } b += B b B System.out.println(b) System.out.println System.out System System.out b 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 = (int) Math.round(sc.nextInt() + 0.5);

        int b = 0;
        for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        }

        System.out.println(b);
    }
} 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 = (int) Math.round(sc.nextInt() + 0.5);

        int b = 0;
        for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        }

        System.out.println(b);
    }
} Main
import 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 = (int) Math.round(sc.nextInt() + 0.5);

        int b = 0;
        for (int t = 1; t < T; t++) {
            if (t % A == 0) {
                b += B;
            }
        }

        System.out.println(b);
    }
}