Fun fact about long scale billion (short scale trillion): it stands for bi-million because it’s a million millions. Trillion is the same with a tri-million being a million billions.
That's cool to know. Vaguely related: I've been studying a little bit of Mandarin recently and have had trouble with their system of describing larger numbers that doesn't follow the Western groups-of-three system. For example, 万 means ten thousand, but it's actually "one of a thing described by a word representing 10^4," and you wouldn't say 十千 which literally translates to "ten of a thing described by a word representing 10^3." It's surprisingly hard to regurgitate the right labels when your brain is used to thinking in terms of 10^3, 10^6, 10^9, etc. They're all different, internally consistent systems, and as far as I can tell nothing makes one better than the rest -- except for one's own familiarity with it.
