This was one of my posts on OANDA...
Trading days per year = 365 - (52*2) = 261
1.5% per day windfall on $1008 principal:
1 year: 49,102 (small fries)
5 years: 276,468,507,100 (~276.5 billion)
10 years: 7.583 x 10^19 (~75.83 quintillion)
20 years: 5.704 x 10^36 (~5.704 undecillion)
50...