How to pass an optional agrument to kill-emacs?

I would like a way to make emacs to return a non-zero exit code when exiting.

This page https://www.gnu.org/software/emacs/manual/html_node/elisp/Killing-Emacs.html lists the command

kill-emacs &optional exit-data

as a mechanism for making emacs return with non-zero return code, stating "If exit-data is an integer, that is used as the exit status of the Emacs process".

How do I add this optional exit-data?

I have tried:

• Interactively using M-x kill-emacs but cannot type a space after that.
• Setting up a binding in my init.el using (global-set-key (kbd "C-x C-M-c") 'kill-emacs), but do not know the syntax well enough to pass an argument.

I see this is related to How to set the exit status for emacsclient and How to make emacs or emacsclient exit with nonzero return code? , but I cannot get the answer I want from those questions/answers.

Please can someone explain how to quit emacs with a non-zero return code and/or provide the syntax to setup a keyboard binding.

(defun my-kill-emacs ()
  (interactive)
  "Exit emacs with status 7."
  (kill-emacs 7))