import java.util.Scanner;
import java.util.List;
import java.util.ArrayList;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();  // input Integer
    int b = sc.nextInt();  // input Integer
    int t = sc.nextInt();  // input Integer
    //    String a = sc.next();  // input String
    int now = 0;
    now+=a;
    int count=0;
    while (now<=t){
      now+=a;
      count+=b;
    }
    System.out.println(count);
  }
} import java.util.Scanner; Scanner java.util import java.util.List; List java.util import java.util.ArrayList; ArrayList java.util public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();  // input Integer
    int b = sc.nextInt();  // input Integer
    int t = sc.nextInt();  // input Integer
    //    String a = sc.next();  // input String
    int now = 0;
    now+=a;
    int count=0;
    while (now<=t){
      now+=a;
      count+=b;
    }
    System.out.println(count);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();  // input Integer
    int b = sc.nextInt();  // input Integer
    int t = sc.nextInt();  // input Integer
    //    String a = sc.next();  // input String
    int now = 0;
    now+=a;
    int count=0;
    while (now<=t){
      now+=a;
      count+=b;
    }
    System.out.println(count);
  } main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();  // input Integer
    int b = sc.nextInt();  // input Integer
    int t = sc.nextInt();  // input Integer
    //    String a = sc.next();  // input String
    int now = 0;
    now+=a;
    int count=0;
    while (now<=t){
      now+=a;
      count+=b;
    }
    System.out.println(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 now = 0; now 0 now+=a now a int count=0; count 0 while (now<=t){
      now+=a;
      count+=b;
    } now<=t now t {
      now+=a;
      count+=b;
    } now+=a now a count+=b count b System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();  // input Integer
    int b = sc.nextInt();  // input Integer
    int t = sc.nextInt();  // input Integer
    //    String a = sc.next();  // input String
    int now = 0;
    now+=a;
    int count=0;
    while (now<=t){
      now+=a;
      count+=b;
    }
    System.out.println(count);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();  // input Integer
    int b = sc.nextInt();  // input Integer
    int t = sc.nextInt();  // input Integer
    //    String a = sc.next();  // input String
    int now = 0;
    now+=a;
    int count=0;
    while (now<=t){
      now+=a;
      count+=b;
    }
    System.out.println(count);
  }
} Main
import java.util.Scanner;
import java.util.List;
import java.util.ArrayList;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();  // input Integer
    int b = sc.nextInt();  // input Integer
    int t = sc.nextInt();  // input Integer
    //    String a = sc.next();  // input String
    int now = 0;
    now+=a;
    int count=0;
    while (now<=t){
      now+=a;
      count+=b;
    }
    System.out.println(count);
  }
}