how to add ads on html

<html>
    <head>
        This is the head of your page
        <title>Example HTML page</title>
    </head>
    <body>
        **Paste your google adsense code inside the body**
        This is the body of your page.
        <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
        <!-- Homepage Leaderboard -->
        <ins class="adsbygoogle"
            style="display:inline-block;width:728px;height:90px"
            data-ad-client="ca-pub-1234567890123456"
            data-ad-slot="1234567890"></ins>
        <script>
            (adsbygoogle = window.adsbygoogle || []).push({});
        </script>
    </body>
</html>