please help me understand this

Use the data for Starbucks (SBUX) and Google (GOOG) to answer the following questions: a. What is the retum for SBUX over the period without including its dividends? With the dividends? b. What is the retum for GOOG over the period? c. If you have 65% of your portfolio in SBUX and 35% in GOOG, what was the return on your portfolio excluding dividends? a. What is the retum for SBUX over the period without including its dividends? The retum without the dividends is \%. (Round to two decimal places.) Data table (Click on the following icon in order to copy its contents into a spreadsheet.)