I was off on my calculations done in my head on the phone earlier.
100*6*2/35 = 1200/35 = 34

profit from game 1
If we assume the same 6 opponents..
Game 2 = (600-35)*2/35 = 32

profit
Game 3 = (600-(35+33))*2/35 = 30

profit
Game 4 = (600-(35+33+31))*2/35 = 28

profit
Total profit = 34+32+30+28 =124
I rounded points earned down and deduction from the base up, so this is a conservative calculation.
So, assuming a noob plays this way with 7 total accounts, one account would have a GR of 224+. He would be in the top 125 of all players cheating that way.