The condensed income statements through operating income for

Amazon.com, Inc. $($AMZN$),$ Best Buy Co$.,$ Inc. $($BBY$),$ and Walmart In $($WMT$)$ for a recent fiscal year follow $($in millions$)$:

$\backslash$table$[[$Sales$,$Amazon,Best Buy,Walmart$],[$Cost of sales,$$280,522,$$$43,638,$$$523,964$