events is a list of probabilities, one per available bet, and payouts is
the matching profit if that bet wins. Each bet costs 1 unit to place. Return the
list of expected profits, one per bet.
A positive number means the bet is worth taking; a house edge shows up as every entry being negative.
Input
events = [0.16666666666666666, 0.5, 0.027777777777777776]
payouts = [5.0, 1.0, 35.0]
Output
[-1.1102230246251565e-16, 0.0, 0.0]