//Problem 6

using System;

​

public class Addition

{

   public static void Main()

   {

      int number1; 

      int sum; 

​

      Console.Write("Enter your year of birth: "); 

      number1 = int.Parse(Console.ReadLine());

​

     DateTime now = 

DateTime.Now

; 

     int year = now.Year;

​

      sum = year - number1; 

            double average = (double)sum / 87;

​

      Console.WriteLine("you have achieved {0:#0.#%} of your life expectancy",average);

        }

}