import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
        int count = (t - t % a) / a;
    
		// 出力
		System.out.println(b * count);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
        int count = (t - t % a) / a;
    
		// 出力
		System.out.println(b * count);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
        int count = (t - t % a) / a;
    
		// 出力
		System.out.println(b * count);
	} main {
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
        int count = (t - t % a) / a;
    
		// 出力
		System.out.println(b * count);
	} 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 count = (t - t % a) / a; count (t - t % a) / a (t - t % a) t t % a t a a System.out.println(b * count) System.out.println System.out System System.out b * count b count String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
        int count = (t - t % a) / a;
    
		// 出力
		System.out.println(b * count);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
        int count = (t - t % a) / a;
    
		// 出力
		System.out.println(b * count);
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
    
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		int t = sc.nextInt();
        int count = (t - t % a) / a;
    
		// 出力
		System.out.println(b * count);
	}
}