Compute net sales, gross profit, and the gross margin ratio for each separate case a through d. (Round gross margin ratio to 1 decimal place) can you also steps to do it

Sales	$	150,000	$	550,000	$	38,700	$	255,700
Sales discounts		5,000		17,500		600		4,800
Sales returns and allowances		20,000		6,000		5,100		900
Cost of goods sold		79,750		329,589		24,453		126,500