Response to the following problem:
Walgreen Company operates drugstores throughout the United States, selling prescription drugs, general merchandise, cosmetics, food, and beverages. For 2004, Walgreen reported (in thousands) net sales of $37,508,200, cost of sales of $27,310,400, and operating income of $2,126,100.
a. Determine Walgreen's gross profit.
b. Determine the gross profit as a percent of net sales. Round to one decimal place.
c. Determine the operating income as a percent of net sales. Round to one decimal place.