Please help solve the following with steps

1- gross profit amount

2- gross profit ratio

3- profit margin

4- inventory turnover ratio

5- receivables turnover ratio

8- Selected data for Caitlin Store appear below. Assume all sales were on credit. 2018 2019 Net sales $630,000 $520,000 Cost of goods sold 520,000 420,000 Inventory at end of year 64,000 85,000 Accounts receivable at end of year 70,000 50,000 Net income 16,000 13,000 Instructions Compute the following 5 calculations for 2019