please help, will upvote

Using the following transactions, what is the company's gross margin percentage. Round to two decimals, if necessary. 1) Revenue $9,000 2) Returns allowances and discounts $500 3) Cost of goods sold $5,000 4) Operating expenses incurred and paid during the year were $3,000. 66.7% 33.3% 41.18% 44.4%. 55.6%