TB Problem 4-157 (Algo) The Filzinger Corporation's... The Filzinger Corporation's December 31, 2024 year-end trial balance contained the following income statement items: 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 Debits Credits $ 6,625,000 67,000 49,000 $ 4,260,000 290,000 933,000 27,000 540,000 142,000 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, 2024 Less operating expenses: Operating income (loss)