I can't calculate a to h required calculations and iv. after tax net income

The following information pertains to Yara Enterprises for September 2024 Beginning direct materials 20,000 Beginning finished goods 28,000 Beginning work in process 21,000 Cost of goods manufactured 175,000 Direct materials purchases 65,000 Ending direct materials 15,000 Ending finished goods 16,000 Ending work in process 10,000 Factory overhead 45,000 Gross profit 90,000 Selling and administrative expenses 60,000 Direct labor Direct materials used Net income (loss) Total manufacturing costs added Cost of goods sold Sales Calculate the following values for Yara Enterprises: a. Net operating income (pretax income) b. Total manufacturing costs added during the month c. Cost of goods sold d. Sales e. Direct materials used f. Direct labor g. Conversion costs h. Prime costs After-tax net income