That formula is the same as AI= Sqrt(AllTimeCashEarned/44444444444)
If you solve 10^13/255 = 44444444444.444... (Just call it 11 fours for simplicity)
So you have AI^2 * 44444444444 = All Time Cash Earned
Divide both sides by 44444444444 and you have
AI^2 = All Time Cashed Earned/44444444444
Take the sqrt of both sides and
AI = SQRT(AllTimeCashEarned/11Fours) Same thing, just different. :)