It's been a while but last night I did it again. Stayed up a little too long and made a typo while entering buy orders.
76 million is just a wee bit more than 76 thousand. That little typo cost me nearly 1.5 billion.
The really annoying part is I actually typoed twice entering that one order. The quantity was supposed be 200, not 20 and if I hadn't typoed that too, the order would have failed due to not having enough cash in my wallet to buy 200 at 76 mil each!
Needless to say I stopped entering orders after that and logged out for the night.