$$I need every calculation step please. Also, the format to use is: $(1)$ Operating Income $-$ Depreciation $=(2)$ Pretax Net Op$.$Inc $-($PtNOI x $40\%$ tax$)=(3)$ After$-$tax NOI $+$ Add back Depreciation$=$ Net Cash Flows $+($yr $3)$ Terminal Cash Flow$$ A company has collected the following information about a new machine that it is evaluating for possible investment:

Purchase price $$340,000$

Salvage value at the end of $3$ years $$15,000$

Shipping and installation

$$50,000$

Book value at the end of three years

$$5,000$

Marginal tax rate $40\%$

a$.$ What is the machine's depreciable basis$-$that is$,$ the amount that can be depreciated during its life?

b$.$ In three years, what will be the net cash flow generated by the disposal of the machine?