Jonny Dymond
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Jonny Dymond on US 'megamillions' lottery fever

Lottery fever has swept America as a nationwide jackpot rockets to $636m (£390m) - the second-largest in US history.

Long queues were reported in stores selling tickets, which are available in 43 US states.

The BBC's Jonny Dymond in Washington DC calculates the long odds of winning - and offers some suggestions what the winner might do with the money.