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 sumB = 0;
		int i = 1;
		while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		}

		System.out.println(sumB);
		sc.close();
	}
} 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 sumB = 0;
		int i = 1;
		while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		}

		System.out.println(sumB);
		sc.close();
	}
} 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 sumB = 0;
		int i = 1;
		while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		}

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

		int sumB = 0;
		int i = 1;
		while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		}

		System.out.println(sumB);
		sc.close();
	} 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 sumB = 0; sumB 0 int i = 1; i 1 while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		} true {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		} if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			} i*A < T + 0.5 i*A i A T + 0.5 T 0.5 {
				i++;
				sumB += B;
			} i++ i sumB += B sumB B {
				break;
			} break; System.out.println(sumB) System.out.println System.out System System.out sumB sc.close() sc.close sc 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 sumB = 0;
		int i = 1;
		while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		}

		System.out.println(sumB);
		sc.close();
	}
} 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 sumB = 0;
		int i = 1;
		while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		}

		System.out.println(sumB);
		sc.close();
	}
} 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 sumB = 0;
		int i = 1;
		while(true) {
			if(i*A < T + 0.5) {
				i++;
				sumB += B;
			}else {
				break;
			}
		}

		System.out.println(sumB);
		sc.close();
	}
}