Use this thing I coded just today if you want to insert LaTeX in a comment, as there’s a lot of nasty escaping that needs to go on.
Testing:
Thank you for creating this!
You’re welcome!
Testing:
%20dx%20=%20\sum_{n=1}%5E{\infty}a_n%20+%20\sqrt[17]{84})Thank you for creating this!
You’re welcome!