Could you live on $5.3 million a year? Why that's the Powerball number that really matters - not $1.5 billion. <script type='text/javascript' src='http://z.cdn.turner.com/cnn/van/resources/scripts/van-widgets.js'></script> <div data-cnnvansinglewidget data-affiliate='gantdaily' data-videoid='video/news/economy/2016/01/14/romans-numeral-powerball-interest.cnnmoney' data-size='auto' data-autostart='true'></div>