title: Function to calculate average of two integers
body: <p>I wrote this:</p>
  
  <pre><code>    public static decimal Average(int a, int b)
      {
          return (a + b) / 2;
      }
  
      public static void Main(string[] args)
      {
          Console.WriteLine(Average(2, 1));
          Console.ReadKey();
      }
  </code></pre>
  
  <p>but it returns <code>1</code> .  But it should return <code>1.5</code> 
  How can I fix it to return 1.5 ? </p>