Hi Bob,
I’m kind of a novice at this as well, so somebody else might want to double check my work. But first thing is you need to put everything in per share. A raw earnings number doesn’t mean much, we own shares, so each dollar earned is spread out across all the shares. In general, use “diluted” shares for a more accurate picture. Saul recommends using non-GAAP numbers for a variety of reasons, if you want to dig into this, theirs a wealth of information in the FAQ/Knowledgebase. That being said, I find the Carmax financial reports particularly difficult to decipher, so I’ll use the numbers they reported, I assume they’re GAAP, but I have trouble deriving non-GAAP numbers from their reports. Anyway:
2013 EPS 2.16
2014 EPS 2.67
Growth = (Cur Yr EPS-Last Yr EPS)/Last yr EPS = (2.67-2.16)/2.16 = 23.6%
Today’s closing price = $71.70
PE = Price per share/Earnings per share = 71.70/2.67 = 26.9