can someone double chexk my work please?

The Filzinger Corporation's December 31, 2021 year-end trial balance contained the following income statement items: Debits Credits 6,700,000 70,000 52,000 Account Title Sales revenue Interest revenue Gain on sale of investments Cost of goods sold Selling expense General and administrative expense Interest expense Research and development expense Income tax expense 4,200,000 350,000 948,000 30,000 600,000 145,000 Required: Calculate the company's operating income for the year using a single-step income statement format. Filzinger Corporation Income Statement For the Year Ended December 31, 2021 Sales revenue $ 6,700,000 Less operating expenses: Cost of goods sold General and administrative expense Selling expense Research and development expense $ 4,200,000 948,000 350,000 600,000 6,098,000 602,000 Operating income (loss) $