JS NUMBER OBJECT EXAMPLE
Run 
<html>
    <head>
        <title>Using Number Object</title>
    </head>
    <body>
        <script type="text/javaScript">
            let num = new Number('18.907');
            document.write(num.toExponential() +"<br/>");
            document.write(num.toFixed() +"<br/>");
            document.write(num.toPrecision(3) +"<br/>");
            document.write(typeof num.toString() +"<br/>");
            document.write(num.valueOf() +"<br/>");
        </script>
    </body>
</html>