English use of plurals with numeric (decimal) fractions is peculiar, particularly in the spoken form.
Hold on, that’s the same in all languages… isn’t it?
English style guides do differ a little about exactly how to format sums of money. But none of them do it the Dutch way.
It’s the kind of thing that ought to belong in Elementary Dunglish but, surprisingly or not, it remains the commonest simple mistake of all.