As AdminCoryops noted "checking" is what one does with mathematics. If you arrive at an answer then on one accepts it until the input assumptions and detailed calculations are examined to be sure all is done correctly.
Since you have the answer you must already have those assumptions and calculations so you can easily fill out the OP with them. If you don't have them then you have nothing to discuss so the OP is useless.
(Note that the same will be needed for much of your other proposed topic(s).)