title: Change Binding value in XAML
body: <p>I need to make some complex binding in XAML. I have a <code>DependencyProperty</code> <code>typeof(double)</code>; let's name it <code>SomeProperty</code>. Somewhere in XAML code of my control, I need to use the whole <code>SomeProperty</code> value, somewhere only a half, somewhere <code>SomeProperty/3</code>, and so on.</p>
  
  <p>How can I do something like:</p>
  
  <pre><code>&lt;SomeControl Value="{Binding ElementName=MyControl, Path=SomeProperty} / 3"/&gt;
  </code></pre>
  
  <p>:)</p>
  
  <p>Looking forward.</p>