Obviously, a new & easy-to learn language has to have absolute regularity & simplicity for all its numbers.
The base numbers should be monosyllabic & very distinct, for instance:
nil - won - tuw - tri - for - fiv - six - set - okt - nin - ten
Next groups up could be:
hunda - mila - miliona - ?
All numbers should be pronounced from left to right, with no joining up, no hyphens, no plurals & no "and".
Big numbers are separated with a comma after thousands, millions etc.
The same comma is used in the alphabetical & numerical representations.
It introduces a clarifying pause in the spoken versions, as well as the obviously-necessary break in the written numbers.
|tuw ten won|
|tri ten six|
|nin ten nin|
|hunda six ten|
|hunda nin ten nin|
|tuw hunda six|
|tuw hunda six ten six|
|nin hunda nin ten nin|
|mila, tuw hunda tri ten for|
|tuw ten mila|
|tuw ten mila, won|
|tuw ten tri mila, for hunda fiv ten six|
|tuw hunda tri ten for mila, fiv hunda six ten set|
|tuw miliona, tri hunda for ten fiv mila, six hunda set ten okt|
I will cover very big & very small numbers, & ordinals, separately.