import java.util.*;
class Main{
	public static void main(String arts[]){
      	Scanner sc =  new Scanner(System.in);
      	int A;
      	int B;
      	double T;
      	int c = 0;
      	A = sc.nextInt();
      	B = sc.nextInt();
      	T = sc.nextInt();
      	T = T + 0.5;
      	c = (B * (int)(T / A));
       System.out.println(c);
    }
} import java.util.*; util.* java class Main{
	public static void main(String arts[]){
      	Scanner sc =  new Scanner(System.in);
      	int A;
      	int B;
      	double T;
      	int c = 0;
      	A = sc.nextInt();
      	B = sc.nextInt();
      	T = sc.nextInt();
      	T = T + 0.5;
      	c = (B * (int)(T / A));
       System.out.println(c);
    }
} Main public static void main(String arts[]){
      	Scanner sc =  new Scanner(System.in);
      	int A;
      	int B;
      	double T;
      	int c = 0;
      	A = sc.nextInt();
      	B = sc.nextInt();
      	T = sc.nextInt();
      	T = T + 0.5;
      	c = (B * (int)(T / A));
       System.out.println(c);
    } main {
      	Scanner sc =  new Scanner(System.in);
      	int A;
      	int B;
      	double T;
      	int c = 0;
      	A = sc.nextInt();
      	B = sc.nextInt();
      	T = sc.nextInt();
      	T = T + 0.5;
      	c = (B * (int)(T / A));
       System.out.println(c);
    } Scanner sc =  new Scanner(System.in); sc new Scanner(System.in) int A; A int B; B double T; T int c = 0; c 0 A = sc.nextInt() A sc.nextInt() sc.nextInt sc B = sc.nextInt() B sc.nextInt() sc.nextInt sc T = sc.nextInt() T sc.nextInt() sc.nextInt sc T = T + 0.5 T T + 0.5 T 0.5 c = (B * (int)(T / A)) c (B * (int)(T / A)) B (int)(T / A) T A System.out.println(c) System.out.println System.out System System.out c String arts[] arts
import java.util.*;
class Main{
	public static void main(String arts[]){
      	Scanner sc =  new Scanner(System.in);
      	int A;
      	int B;
      	double T;
      	int c = 0;
      	A = sc.nextInt();
      	B = sc.nextInt();
      	T = sc.nextInt();
      	T = T + 0.5;
      	c = (B * (int)(T / A));
       System.out.println(c);
    }
}