Ah, so I also don't think I have seen this in practice, but I suppose it's possible that it originated from pre-decimal-system currencies, like the old British

Ah, so I also don't think I have seen this in practice, but I suppose it's possible that it originated from pre-decimal-system currencies, like the old British money system, where perhaps it was more important to use separate units for clarity. I suppose it's also possible it needs to sometimes be used (although, again, I have never seen this) in certain cases in more 'formal' situations - accounting, contracts and so on. I guess the format, with the symbols wrapping the numbers so as to make them easier to parse, does make sense.