LaTex Math

<script src="https://polyfill.io/v3/polyfill.min.js?features=es6"></script>
<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js"></script>

<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
  <mn>20</mn>
  <mfrac>
    <mn>47</mn>
    <mn>100</mn>
  </mfrac>
</math>

<html>
  <head>
    <script
      type="text/javascript"
      async
      src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-MML-AM_CHTML"
    ></script>

    <title>mathsjax</title>
  </head>
  <body>
    $$7\frac{4}{3}$$
  </body>
</html>