So, the tips and notes mention that we the preposition “de” with multiples (eg. șaizeci de milioane), but why do we use it here?
You need de with numbers of things from 20 upwards, not for smaller quantities.
It's for word agreement, because it is a number of tables.
Thanks, so we can’t say “El are douăzeci mese.“?
Sorry, I don't think so.