Ever wonder why we sometimes #count things by the #dozen, or why there are 60 minutes in an hour? We may have the ancient Babylonians (or earlier societies) to thank. They came up with this ingenious way to keep track of large numbers using only their two hands. There are variations on this theme, but it becomes pretty obvious if you have a hand with four fingers, with three bones each, and a thumb.
https://mdpaths.com/rrr/history/counting_by_twelves/index.html