Does this mean, that a single machine potentially amassed 2000 installs per year (1 per hour)? Still, 558k installs/2k installs p.a./38 licenses are still over

Does this mean, that a single machine potentially amassed 2000 installs per year (1 per hour)? Still, 558k installs/2k installs p.a./38 licenses are still over 7 years. Something doesn't quit add up here.