JSFiddle - React, Tailwind, and code Playground

HTML

<form name="Tender">
  <input name="Amount" type="text" value="0.00" id="money" onKeyUp="parseMoney()"/>
</form>

JavaScript

function add(base, add){
    return (base.toFixed(2) + add) * 10
}

function parseMoney(){
    //var num = parseInt($(this).text());
    var va = new Number($("#money").val());
    alert(va);
    var added = add(input, num);
    $("input").val(added);
};