how do you find the amount of cost of goods sold with the gross profit and net sale
140,637. To calculate the gross profit, we first add up the cost of goods sold: Automotive cost of sales ($123,516 m) + FS interest expenses ($2,699 m) + FS provision for credit and insurance loss ($305 m) = $126,520 m. We do not include Selling, administrative and other expenses, since these are mostly fixed costs.ross profit is expressed as a currency value, gross profit margin as a percentage. The formula for gross profit margin is: Gross profit margin = gross profit / revenue = (revenue-cost of goods sold) / revenue. Gross profit margins vary greatly by industry.