The 2018 income statement for Duffys Pest Control shows that depreciation expense was $192 million, EBIT was $494 million, and the tax rate was 30 percent. At the beginning of the year, the balance of gross fixed assets was $1,564 million and net operating working capital was $412 million. At the end of the year, gross fixed assets was $1,806 million. Duffys free cash flow for the year was $407 million.

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