I think you mean 6 or more digits? I have yet to see a multigigabyte document. Even mp3s that size are extremely rare.
Even then, most of my documents are quite a bit smaller, as I have a tendency to write my documents in wordpad instead of office, and then save as rtf or txt.
I meant seven or more, see the sibling comment. Seven digits is a megabyte or more. That encompasses most single song mp3s, some medium to large size documents, etc.
I'm not sure why I said nine, seven is what I was thinking of.
