If you’re feeling some St Patrick’s Day magic, you might want to buy a lottery ticket. Mega Millions and Powerball have racked up some massive jackpots after weeks of rollovers.The Mega Millions jackpot is already estimated at a whopping $875m for Tuesday night’s drawing after no tickets matched all six numbers drawn on Friday night. Monday night’s Powerball jackpot is $645m after no tickets matched the winning numbers drawn Saturday night.Players of either lottery are seeking to overcome staggeringly slim odds of winning. Mega Millions players have a 1 in 302.6m chance of taking…