Calculate the taxable income for Walmart Inc. based on the financial data for the fiscal year ending January 31, 2023. The company reported total revenue of $550,000,000, cost of goods sold amounted to $300,000,000, and operating expenses totaled $150,000,000. Additionally, depreciation expenses were $25,000,000, and interest expenses stood at $10,000,000. The corporate tax rate for Walmart Inc. is 21%.