$1.$ Last year, Vaughn Corporation had net operating profit after taxes $($NOPAT$)$ of $$7,500$ million. Its EBITDA was $$11,800$ million and net income amounted to $$6,600$ million. During the year, Vaughn made $$4,500$ million in net capital expenditures $($remember that net capital expenditures equal gross capital expenditures less depreciation$),$ and its net operating working capital increased by $$1,200$ million. Finally, Vaughn$$s finance staff has concluded that the firm$$s total after$-$tax capital costs were $$6,500$ million $($which is calculated by multiplying the company$$s WACC by its total invested capital$),$ and its tax rate is $25\%.$ Assume that the company does not have any amortization charges. Based upon this information, answer the following five questions.

a$.$ What is the company$$s operating income $($EBIT$)?$

b$.$ What is the company$$s depreciation expense?

c$.$ What is the company$$s interest expense?

d$.$ What is the company$$s free cash flow?

e$.$ What is the company$$s EVA?