JSFiddle - React, Tailwind, and code Playground

HTML

<div id="r"></div>

JavaScript

$('#r').append((3*20.9).toFixed(1));
$('#r').append('<br/>');
$('#r').append((7*20.9).toFixed(1));
$('#r').append('<br/>');
$('#r').append((11*20.9).toFixed(1));