how to use <div> in html code example

Example 1: html div

<div id='number1' class='model'>
  <h2>Number 1:</h2>
  <h3>Divs</h3>
  <p>
    Div's are great to split up and shape your website, they can be
    modified my css, interact with js and more.
  </p>
  <!-- Eny regular html code can be put in divs, multiple classes
  can be put in divs. Yet divs can only have 1 id. Divs are so useful!-->
</div>
<!-- Hope This Helped! -->

Example 2: what is div in html

<div>
  <!-- This is opening of a division tag-->
</div>