Save yourself the trouble - Smartman Apps is a crank. They categorically will not comprehend the difference between the notation we made up and how numbers work. Dingus keeps saying 'animals can count' like that proves parentheses-first is completely different! from distribution.

Why'd Russel and Whitehead bother with the Principia Mathematica when they could just point to Clever Hans?

this is just a writing standard that is globally agreed on

No, it's a universal rule of Maths

The writing rules are defined by humans not by natural force

Maths is for describing natural forces, and is subject to those laws

That one thing and another thing are two things, is a rule from nature

Yep, there are even some animals who understand that, and all of Maths is based upon it.