Home Depot, Inc. (HD) had 1.70 billion shares of common stock outstanding in 2008, wheras Lowes Companies, Inc. (LOW) had 1.46 billion shares outstanding. Assuming Home Depot's 2008 interest expense is $696 million, Lowes' interest expense is $239 million, and a 38 percent tax rate for both firms, what is their break-even level of operating income