It’s March Madness – And all that money spent on brackets is adding up to big bucks. The American Gaming Association estimates Americans are betting 9.2 billion dollars on NCAA brackets this year. The association says all told, about 40 million Americans filled out about 70 million brackets for the 2016 tournament. The 9.2 billion is a lot more than Americans spend on a lot of other forms of gambling and entertainment. It’s more than double the 4.2 billion people spent on sports gambling last year in Nevada, where it’s legal. And it’s more than the 6.6 billion dollars Americans spent last year on Powerball and Mega Millions lottery tickets.