JSFiddle - React, Tailwind, and code Playground

HTML

<div id="result">
  <span id="base"></span><sup><span id="frac"></span></sup> &euro;
</div>

JavaScript

var price = 1.03;
var basePrice = Math.floor(price);
var frac = (price - Math.floor(price)).toString().slice(2, 4); 
// if you want more digits, just change 4 to greater number
$('#result #base').html(basePrice);
$('#result #frac').html(frac);