import java.util.*;
 class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=sc.nextInt();
        double t=sc.nextDouble()+0.5;
        
        int k=0;
        int s=a;
        while((double)s<t)
        {
            k=k+b;
            s=s+a;
        }
        System.out.println(k);
    }
} import java.util.*; util.* java class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=sc.nextInt();
        double t=sc.nextDouble()+0.5;
        
        int k=0;
        int s=a;
        while((double)s<t)
        {
            k=k+b;
            s=s+a;
        }
        System.out.println(k);
    }
} Main public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=sc.nextInt();
        double t=sc.nextDouble()+0.5;
        
        int k=0;
        int s=a;
        while((double)s<t)
        {
            k=k+b;
            s=s+a;
        }
        System.out.println(k);
    } main {
        Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=sc.nextInt();
        double t=sc.nextDouble()+0.5;
        
        int k=0;
        int s=a;
        while((double)s<t)
        {
            k=k+b;
            s=s+a;
        }
        System.out.println(k);
    } 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 double t=sc.nextDouble()+0.5; t sc.nextDouble()+0.5 sc.nextDouble() sc.nextDouble sc 0.5 int k=0; k 0 int s=a; s a while((double)s<t)
        {
            k=k+b;
            s=s+a;
        } (double)s<t (double)s t {
            k=k+b;
            s=s+a;
        } k=k+b k k+b k b s=s+a s s+a s a System.out.println(k) System.out.println System.out System System.out k String[] args args
import java.util.*;
 class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int a=sc.nextInt();
        int b=sc.nextInt();
        double t=sc.nextDouble()+0.5;
        
        int k=0;
        int s=a;
        while((double)s<t)
        {
            k=k+b;
            s=s+a;
        }
        System.out.println(k);
    }
}
