MathML Long Division

<math xmlns = "https://www.w3.org/1998/Math/MathML">
   <mlongdiv longdivstyle = "lefttop">
      <mn> 3 </mn>
      <mn> 435.3</mn>
      <mn> 1306</mn>
      <msgroup position = "2" shift = "-1">
         <msgroup>
            <mn> 12</mn>
            <msline length = "2"/>
         </msgroup>
         
         <msgroup>
            <mn> 10</mn>
            <mn> 9</mn>
            <msline length = "2"/>
         </msgroup>
         
         <msgroup>
            <mn> 16</mn>
            <mn> 15</mn>
            <msline length = "2"/>
            <mn> 1.0</mn>           
         </msgroup>   
         
         <msgroup position='-1'>   
            <mn> 9</mn>
            <msline length = "3"/>
            <mn> 1</mn>
         </msgroup>
      </msgroup>
   </mlongdiv>
</math>