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Comment by airstrike | Hacker News Reader

How exactly can 10 be divided by 4 and 8?

In decimal:

10 / 4 = 2.5

2.5 can be represented exactly in decimal. As opposed to:

10 / 3 = 3.33333333333...

which cannot.

In duodecimal (10=dozen, A=ten): 10 / 3 = 4 A / 3 = 3.4

you need an extra blank line, or indent 3 spaces, to preserve linebreaks:

10 / 3 = 4

A / 3 = 3.4

     10 / 3 = 4
     A / 3 = 3.4

Unfortunately, it is too late to edit; but thanks!

Maybe he meant you don't end up with a number with infinite digits?

10/4 = 2.5

vs.

10/3 = 3.33333...