Need help with letter a

Student Work Area a. REI's Income Statement' Percentages for 2016 to 2020 Income statement components Net sales Cost of goods sold Gross profit Operating and other expenses Income (loss) before taxes and dividends Income tax provision (benefit) Income before members' dividends Members' dividends Net income A Author K9 Enter a mathematical formula to calculate the percentage amount for this item. Use an absolute reference on the denominator to allow efficient copying to cells below this. @mention or reply A Author L9 Enter a mathematical formula to calculate the percentage amount for this item. Use an absolute REl's Income statements for REI for 2016 through 2020 are presented here. As indicated in the feature story "Buy Now, Vote Later", REl is a co-op in which members share in the company's profits. However, co-ops do not have common stock so even though the members of the co-op receive distributions. The amounts distributed are not really dividends. Instead, REI recognizes these distributions as expenses on its income statement. Instructions There are four parts to this problem. a. Complete the table in the Student Work Area by inputting formulas to compute the percentage of net sales for each item on the income statements for each of the five years