You were forced to memorize a table as a child. It took years.
This lookup table is found in English and several other languages.
It’s so embedded that it’s part of your implicit memory now. You weren’t born with it. It was put in you through non-stop training sessions.
Ones, Tens, Hundreds, Thousands, Millions, Billions, Trillions.
Tenths, Hundredths, Thousandths
_, _0, _00, _000, _000,000, _000,000,000, _000,000,000,000
._, .0_, .00_
Repeat something often enough and with authority (or humor (memes), or violence, or love, or duty), and it becomes habit. Instinctive. Almost as if you were born with it.
But, you weren’t.