b'This year, 47 million Americans will spend an estimated $8.5 billion betting on the outcome of the NCAA basketball championships, a cultural ritual appropriately known as March Madness. Before the tournament starts, anyone who wants to place a bet must fill out a bracket, which holds their predictions for each of the 63 championship games. The winner of a betting pool is the one whose bracket most closely mirrors the results of the championship.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'