Can you help with the with the Inventory computation, cost of sales, and gross profit (or loss)?

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Determine the following: a) Gross profit (or loss) from the sale of goods or products for the current taxable year. b) The inventory. c) Total cost of sales (cost of sales). ITEM Balance at the beginning of the year January 1, 2019 $900,000 300,000 900,000 Materials Units in Process Finished Units Purchase of materials Direct wages Sales Other direct costs Balance at the end of the year December 31, 2019 $150,000 400,000 500,000 500,000 700,000 5,000,000 40,000