What would the calculations look like for Starbucks 2018 annual report on the listed ratio?

ROE =Net income - preferred dividends/Average common stockholders' equity

My number feels incorrect and i'm trying to see where I went wrong. I used 4518.3(Net income), couldn't find preferred dividends and (1175.8(2018)+5457(2017))/2= 1394.6 (Average common stockholders' equity).

I am questioning if I pulled the correct numbers from the annual report. My ratio was 136%, if that is correct what does it mean being such a high number?