JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" id="btn" value="show text" onclick="createFormula()">

<br>
<span id="formula" style></span>

JavaScript

<script
  src="https://code.jquery.com/jquery-1.10.2.js"
  integrity="sha256-it5nQKHTz+34HijZJQkpNBIHsjpV8b6QzMJs9tmOBSo="
  crossorigin="anonymous"></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-MML-AM_CHTML' async></script>
<script>
     function createFormula() {
     
      var value='`a*b/(5+9)-6+8/9+9+"سرمایه"/895+9+'+'"'+'c'+'"'+'`';
      document.querySelector('#formula').textContent =value;
      MathJax.Hub.Queue(["Typeset",MathJax.Hub,'formula']);      
     }
</script>