From “A History of Mathematics” by Carl B. Boyer:
The Attic and Ionian notations have both been found in inscriptions, but the Ionian system prevailed arond the third century BC.
(Attic notation seen from 454 to 5 BC)
(Ionian notation probaby used from 5th century BC, possibly as early as 8th century BC).
The Ionian notation used an older version of the Greek alphabet with three extra letters: vau (aka digamma or stigma), koppa and sampi.
One letter was used (in alphabetical order) for 1-9, 10-90, 100-900.
1 = alpha, 2 = beta, 3 = gamma, …, 10 = iota, …, 100 = pi
The three older letters occurred in the following position:
6 = vau, 90 = koppa, 900 = sampi
For 1000 to 9000, the first 9 letters were used again, with the letter preceded by a stroke or accent. (In this book, the stroke or accent looks somewhat like a comma.)
So for example the number 8888 would be written as
,eta omega pi eta
For numbers larger than 10000, you would write the letter M (greek myriad) with an integer symbol above or after it, separated by a dot from the the rest of the number, to indicate that the number next to the M should be multiplied by 10000.
e.g. 88888888 would be written as
M,eta omega pi eta . eta omega pi eta
Yo could apply the same principals for the double myriad, 100000000
Fractions are another topic.
J’ai assez vécu pour voir que différence engendre haine.