I guess it's time for someone to write an "Assumptions Programmers make about money" post.
Additionally, fractional cents are often presented to the consumer when purchasing gas/fuel.
i.e. they track your account balance to more than 2 digits, they just only show you 2 digits.
All 10 of them?
It goes without saying that half pennies are dead. A mill seems to be from the Coinage Act of 1792, which is perhaps a tad outdated.
> A mill ... is perhaps a tad outdated.
Yet you use mills every time you pay for gas. Pointless in that case? Probably. Still used all the time? Certainly.