title: Django query on decimal field
body: <p>I have an object with a DecimalField value of 5.60.  I'm making a query:</p>
  
  <pre><code>Mdl.objects.get(speed__iexact="5.60")
  </code></pre>
  
  <p>This will return the correct result.  But this will not:</p>
  
  <pre><code>Mdl.objects.get(speed__iexact="5.6")
  </code></pre>
  
  <p>Is there a way to automatically reconcile this inconsistency?  The filter value is user provided, so I want to be sure that a user typing 5.6 can find the object.</p>