Paste Closing Tag Without Spawning An Opening P Tag In Contenteditable

I've got a contenteditable div:

I want new paragraphs to form when I press

Solution 1:

Editing occurs in a document object model (DOM). The HTML tags don't really exist in the editor. The HTML is parsed into a DOM. The HTML tags are produced again when the DOM is serialized. Therefore, improper HTML fragments cannot be pasted without consequences.