Calculate the "free cash flow" in millions for the Cornwall Corporation (to at least the nearest hundred thousand - so one place accuracy) if a firm has "earnings before interest and taxes" of $4.7 million and depreciation of $1.1 million, a tax rate of 0.3, a capital expenditure of$0.7 million, and an increase in "net operating working capital" of $1.4 million.

I know the correct answer I'm supposed to get is $3,700,000 but I keep getting the incorrect answer.