> Because when you're talking about thousands of dollars as the smallest 
> increment, that wastes space.

Oh I see, so it's like a base-10 float?

> And usually (at least in modern standards) these numbers go up to 
> something like 38 digits. So why would an "int" be better than packed 
> decimal in terms of processing speed?

It would avoid the need for custom hardware, but obviously it works out 
faster per $ to get the non-standard CPUs if that's what they actually use.

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