The 2015 income statement for Duffys Pest Control shows that depreciation expense was $203 million, EBIT was $516 million, and the tax rate was 35 percent. At the beginning of the year, the balance of gross fixed assets was $1,586 million and net operating working capital was $423 million. At the end of the year, gross fixed assets was $1,839 million. Duffys free cash flow for the year was $429 million. Calculate the end-of-year balance for net operating working capital. (Enter your answer in millions of dollars rounded to 1 decimal place.)

Net operating working capital= $ ?m