Imperavi removes a closing tag that is a continuation of other non-editor text, what can be done?

Question

HTML

In the Imperavi editor, the text contains a closing tag </div>, in the same editor there is no opening tag. Imperavi removes this tag, how to make sure that it does not delete.
One setting costs :
replaceDivs: false

Answer 1

Take this tag out of the editor in the output.
Why is he needed there at all?