JSFiddle - React, Tailwind, and code Playground

HTML

<div class="marketing">
        <div class="module-surround">
            <div class="module-content">
                <div class="k2ItemsBlock">
                    <ul>
                        <li><div>4</div></li>
                        <li><div>5</div></li>
                        <li><div>6</div></li>
                        <li><div>7</div></li>
                    </ul>
                </div>
            </div>
        </div>
     </div>

JavaScript

$('.k2ItemsBlock li>div').unwrap().wrap('<div/>');