JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="counter" value="" />

JavaScript

var counter, num = 0;
function countToFiveBillion(){
    if(num < 5e9)
    {
        if(++num % 18701 == 0){
            setTimeout(countToFiveBillion, 0);
            counter.value = num;
        } else {
            countToFiveBillion();
        }
    } else {
        counter.value = "number greater than 5 Billion";
    }
}
function initiateCountDown(){
    counter = document.getElementById('counter');
    counter.value = num; //Init, show that the script is 
    countToFiveBillion();
}
window.onload = initiateCountDown;