package basic;

import java.util.Scanner;

public class a248 {

 /**
  * @param args
  */
 // Divisor 被除數
 // Dividend 除數
 // Quotient 商數
 // Remainder 餘數
 public static void main(String[] args) {
  // TODO Auto-generated method stub
   Scanner cin = new Scanner(System.in);
  while (cin.hasNext()) {
   int Divisor = cin.nextInt(); // Divisor 被除數
   int Dividend  = cin.nextInt(); // Dividend 除數
   int position  = cin.nextInt(); //小數點位置
   int Quotient[] = new int[position + 1]; // Quotient 商數
   // 取所有商數
   for (int n = 0; n < Quotient.length; n++) {
    if(n==1){
     System.out.print(".");
    }
    //0處理
    if (Dividend==0){
     Quotient[n] = 0;
    }else
    {
     Quotient[n] = (Divisor / Dividend); 
     Divisor = (Divisor % Dividend) * 10;
    }

    System.out.print(Quotient[n]);
   }
   
   System.out.print("\n");
  }
 }

}