title: long division is not properly displayed in Mathjax
body: <pre><code>&lt;math xmlns=&quot;http://www.w3.org/1998/Math/MathML&quot;&gt;
      &lt;mlongdiv charalign=&quot;center&quot; charspacing=&quot;0px&quot; stackalign=&quot;left&quot;&gt;
          &lt;mn&gt;8&lt;/mn&gt;
          &lt;mrow&gt;
              &lt;none&gt;&lt;/none&gt;
              &lt;mn&gt;3&lt;/mn&gt;
          &lt;/mrow&gt;
          &lt;msgroup&gt;
              &lt;mn&gt;251&lt;/mn&gt;
              &lt;msrow&gt;
                  &lt;menclose notation=&quot;bottom&quot;&gt;
                      &lt;mn&gt;2&lt;/mn&gt;
                  &lt;/menclose&gt;
                  &lt;menclose notation=&quot;bottom&quot;&gt;
                      &lt;mn&gt;4&lt;/mn&gt;
                  &lt;/menclose&gt;
              &lt;/msrow&gt;
              &lt;msrow&gt;
                  &lt;none&gt;&lt;/none&gt;
                  &lt;mn&gt;1&lt;/mn&gt;
              &lt;/msrow&gt;
          &lt;/msgroup&gt;
      &lt;/mlongdiv&gt;
  &lt;/math&gt;
  </code></pre>
  <p>This is how it's currently displayed(<a href="https://jsbin.com/gobojih/edit?html,output" rel="nofollow noreferrer">https://jsbin.com/gobojih/edit?html,output</a>)
  <a href="https://i.stack.imgur.com/9grwo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9grwo.png" alt="mathjax-long-division-bug" /></a></p>
  <p>This is how it's displayed in wiris Mathtype demo page(<a href="https://demo.wiris.com/mathtype/en/developers.php" rel="nofollow noreferrer">https://demo.wiris.com/mathtype/en/developers.php</a>)
  <a href="https://i.stack.imgur.com/dGEc8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dGEc8.png" alt="mathtype-wiris-bug" /></a></p>