whoops - i seem to have indulged in some 'fuzzy' math. this should set the record straight:

one mile = 63,360 inches

108 miles = 6,842,880 inches

divide 6,842,880 by 73.6 (gear inches), and you get roughly 92,974.

feel free to correct if i've screwed it up again...

btw, i was on the yellow fixie with bullhorns and a brake - did i see any of you?