Sorry, that is a visualization rather than a math operation...
I used it to convert the hour to minutes...
The hour is sliced into 12 parts so I converted the hour into minutes because it is easier, in this specific case, to divide 60 by 12 than to divide 1 by 12 then convert the answer to minutes...
My explanation is an attempt to break my processing into steps and it reflects my own style of working problems...