JSFiddle - React, Tailwind, and code Playground

JavaScript

$(function(){
    var calcxxx = ( 1023 * 2 ) + 76561197960265728;
    var calcyyy = ( 1023 * 2 ) + 6561197960265728
    $('body').append(calcxxx + '<br>');
    $('body').append('7' + calcyyy);
});