Homer:Iliad:79:while we were to be allotted in tens (Patrick Tufts)
From the Quicksilver Metaweb.
An Iliad page
While we were to be allotted in tens ... and each one of our tens chose a man of Troy to pour wine for it, still there would be many tens without a wine steward
Agamemnon is saying "we outnumber the Trojans by more than ten to one."