JSFiddle - React, Tailwind, and code Playground

HTML

<div class="totalprice">2</div>
<div class="totalprice">2</div>
<div class="totalprice">6</div>
<div class="price">
12
</div>
<div class ="price">
2
</div>

JavaScript

var sum = 0;
$('.totalprice').each(function()
{
    sum += parseFloat($(this).text());
});
alert(sum);
$('.price').each(function()
{
  deduct += parseFloat($(this).text());
});
alert(sum - deduct);