mmultiscripts3

W3C sample	WIRIS
	$${}^{\mathrm{٥}}ل_{\mathrm{٣}}=\mathrm{٥}\times \mathrm{٤}\times \mathrm{٣}$$

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block" dir="rtl">
  <mmultiscripts>
    <mo>ل</mo>
    <mn>٣</mn>
    <none/>
    <mprescripts/>
    <none/>
    <mn>٥</mn>
  </mmultiscripts>
  <mrow>
    <mo>=</mo>
    <mn>٥</mn>
    <mo>×</mo>
    <mn>٤</mn>
    <mo>×</mo>
    <mn>٣</mn>
  </mrow>
</math>

Author: Abdelshafi Bekhit, Mathematics Book for high-school students, grade 11 in kuwait, Book Title: Mathematics and Statistics, the second part.