Answer without using calculator
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$900b right now. Put it in HBD and you'd earn $6M every second. lol But seriously, give me the cash upfront. I could then do options 1,3,4 myself and start with the cash.
Well, I will go backwards and simply choose the last option, $9k per second. I've tried to do some math in my head and besides the $900 Billion, I think the amount per second really ads up. That if a train doesn't pass over you. :)))