Emanuel Correia won the seven-figure prize for playing the "300X" game, a $30 scratch-off ticket.
He chose to take the lump sum of $650,000 (before taxes) rather than the annuity.
Correia plans to buy a home with his winnings.
He bought the ticket at Star 50 Convenience at 303 Geneva Ave. in Dorchester. The store will get a $10,000 bonus for the sale.
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