UPDATE: What Would You Do With $640 Million?

UPDATE: Friday, March 30

Washington's Lottery released the following message on Friday:

Mega Millions officials initially set the estimate at $476 million after Tuesday night’s drawing, then the jackpot rose to $500 million on Wednesday, $540 million on Thursday, and is now at $640 million with a lump sum value of $462 million! This Mega Millions jackpot has broken its own record three times this week making it the largest jackpot in world history.

Those feeling luck have until 7:45 p.m. to purchase tickets.

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We want to know what you would do if you became a "lucky dog" and won half a billion dollars in the biggest Mega Millions jackpot to date.

Last January, players from Washington and Idaho won the second highest Mega Millions jackpot in history of $380 million also making it the highest jackpot ever won by a Washington player. 

Now, the pot is even sweeter; at $476 million for this Friday, March 30, drawing, Washington's Lottery says it's the largest jackpot in North America, breaking its own record of $390 million.

There were three lucky Washington $250,000 winners in last night's drawing, including two tickets bought at retailers in Spokane and one in Ferndale.

So tell us, what would you do if you won half a billion dollars (before 25 percent taxes)?