So once in every 625 spins of this hypothetical machine, you’ll hit your set of five identical symbols for the jackpot. Now if the jackpot payout was $625, the machine would be a break-even proposition, as on average you’d pay $1 624 times without winning anything, and then you’d hit once in every 625 spins for the $625 prize, breaking. Slot Machine malfunctions. How and why slot machines screw up, causing players to think they've won the jackpot when they really haven't. What are the odds of hitting the jackpot? When you play a three-reel slot machine you don't know if your coin is the 1st to be inserted into that machine or the 7,999th. 2) If the machine is set to pay back.

HOLLYWOOD, Fla. — A Fort Lauderdale woman walked into the Seminole Hard Rock Hotel & Casino earlier this week to celebrate her 60th birthday. She walked out a millionaire.

The woman, who asked not to be identified, won a $3.8 million jackpot Thursday morning playing a $1 slot machine.

It was the largest payout ever at a Seminole Tribe of Florida-owned gaming property.

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The woman, who was staying the night at the new guitar-shaped hotel, had wagered a $5 bet before the jackpot was won.

'I am in absolute shock,' she said. 'You like to dream big but that's really big. That's not even in the ballpark of what you think you can win. That's a lottery. It still feels like a dream.'

Although the earnings put her in a new tax bracket, the lucky winner said she'll be modest in her spending.

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'We're talking about hurricane windows,' she said. 'We talked about resurfacing the pool or maybe getting a nicer condo after retirement.'