I think your problem is that you spend too little time listening to other people which necessarily results in you failing to understand what they are saying and unnecessarily repeating yourself.
You know how they say: insanity is doing one and the same thing over and over again while expecting different results. Your approach is obviously ineffective, and yet, you keep using it. There is no effort on your part to adjust to the situation. You just keep repeating one and the same thing over and over again.
Your claim is that we can divide a group consisting of 12 things into three equally-sized sub-groups (which is, in itself, a proof that we can divide a whole into three equal parts given that the mentioned group is a whole, a single thing, not merely 12 things) but that we cannot divide a group consisting of one thing into three equally-sized sub-groups (without explaining why other than because 1/3 has no decimal equivalent.)