A LOT, you do realise its like 1 game per 25 mins, without botting, that's just under 2 games a hour (50 mins), averaging 1 ticket per game, you win some you lose some, that 2 tickets every 50 minutes, halo is 250 tickets? so 250*25=6250, 6250/60 = around 104 hours, so yeh :s
(my calculations might be wrong).