mtable1

W3C sample	WIRIS
	$\begin{aligned} 1111.23 & 0 & 0 \\ 0 & 1123 & 0 \\ 0.2 & 0 & 1123 \end{aligned}$

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  <mtable columnalign="right left center" rowlines="solid none" equalrows="false" frame="solid" framespacing="1em 2ex">
    <mtr>
      <mn>1111.23</mn>
      <mn>0</mn>
      <mn>0</mn>
    </mtr>
    <mtr>
      <mn>0</mn>
      <mn>1123</mn>
      <mn>0</mn>
    </mtr>
    <mtr>
      <mn>0.2</mn>
      <mn>0</mn>
      <mn>1123</mn>
    </mtr>
  </mtable>
</math>

Author: Wolfram Research