>>1222417As I said there are different scales.
After 1000,
In the first scale the next unit would be for 10^5, 10^6, 10^7 and so on, so 1234K would become something like 1T2B3M4K. (While it seems a little awkward to assign name for each individual place of number, don't forget that's how they're read, like 12345 are read as 1M2K3H4T5, which should also be keep in mind for number strings written in forthcoming examples.)
A variation currently used in Vietnam derived from it, so 1,234,567K would become 1S234T5B6M7K (S mean the 7th counting word, the fifth and the sixth are skipped so the scale go up in the power of 1000 from this point onward, matching the western system)
And then another system, commonly used in Japan and other area since Edo era, would go up in the power of 10000, so 1,2345,6789K would be expressed as 1B2345M6789K.
But such approach also have another variation, which is when expressing 1,2345,6789B, this nowadays standard approach would go like 1Q2345T6789B, however the variation approach would use 1T(2345M6789)B.
And then another approach to handle it is similar to the previous one, however the different is that the previous approach would use 1P(2345M6789)Q(0123M4567)T to describe a number, while this approach would instead describe it as 1M2345Q(6789B0123M4567)T.
All in all, countries probably moved away from the first system to avoid the need of creating excessive amount of numeric words, and then they probably settled to use the power of 10000 in all those other variations probably because 10000 is already a word that familiar to most already, by the time they started to realize it's probably better to say 10M instead of 1B and 100M instead of 1T? That's how I guess it happened
