What would you do if your friend won on a slot machine with your quarter?

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You're at the casino playing a quarter slot machine. You have a bucket of quarters that you're using to feed the machine. You've been playing for an hour and haven't really hit anything big. You're friend comes over to ask how its going. You explain that you haven't been very lucky. So your friend reaches into your bucket, grabs one of your quarters, puts it into the machine you've been playing and it hits for $250,000. What do you do? Keep all the winnings for yourself? Split it with your friend? Give your friends a small portion? Give the whole thing to your friend?