E.G.
The speed of light is 299,792,458 meters per second.
The speed of light is 299,792.458 KM per second.
The speed of light is about 300 M meters per second.
10/5 in Base 12 is 2.49724972497...
Or binary (Base 2)
1011/101 = 10.0011001100...
Duodecimal metric system would have the same features that you’re talking about (which have nothing to do with the base).
E.G.
The speed of light is 299,792,458 meters per second.
The speed of light is 299,792.458 KM per second.
The speed of light is about 300 M meters per second.