Tubby Toys estimates that its new line of rubber ducks will generate sales of $$7\mathrm{.}70$ million, operating costs of $$4\mathrm{.}70$ million, and a depreciation expense of $$1\mathrm{.}70$ million. If the tax rate is $40\%,$ what is the firm$$s operating cash flow?

Note: Do not round your intermediate calculations. Enter your answer in millions rounded to $2$ decimal places.