Problem 2-33 Free Cash Flow (LG2-5)

The 2021 income statement for Duffys Pest Control shows that depreciation expense was $201 million, EBIT was $512 million, and the tax rate was 30 percent. At the beginning of the year, the balance of gross fixed assets was $1,582 million and net operating working capital was $421 million. At the end of the year, gross fixed assets was $1,833 million. Duffys free cash flow for the year was $425 million.

Calculate the end-of-year balance for net operating working capital.