The numbers we write are made up of algorithms, (1, 2, 3, 4, etc) called arabic algorithms, to distinguish them from the roman algorithms (I; II; III; IV; etc.).
The arabs popularise these algorithms, but their origin goes back to the phenecian merchants that used them to count and do their commercial contability.
Have you ever asked the question why 1 is “one”, 2 is “two”, 3 is “three”…..?
What is the logic that exist in the arabic algorithms?
The logic is extremely simple! – There are angles!
Look at these algorithms written in their primitive form and check it up! …
Moral of the story:
It is never late to learn!