JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
<li>0.1 + 0.2 = 
<span id="result"></span></li>
<li>0.1 + 0.2 = 
<span id="result2"></span></li>
</ul>

CSS

#result, #result2{
  color:red;
}

JavaScript

let count = 0 + 0.3;
document.getElementById("result").innerHTML = count;

let count2 = (1 + 2)/10;
document.getElementById("result2").innerHTML = count2;