In this problem , what figures do I use to calculate marginal tax rate ?

The Talley Corporation had a taxable income of $365,000 from operations after all operating costs butbefore: (1) interest charges of $50,000,(2) dividends received of $15,000,(3) dividends paid of $25,000, and(4) income taxes.What is the firm's taxable income? What is it marginal tax rate? What is its tax expense? What is its after-tax income?What is the average tax rate based on taxable income?Using Excel spreadsheet.

Taxable Income $365,000 Interest charges ($50,000) 30% of Dividends Received (0.30*15,000) $4,500 Taxable Income EBT $319,500 $319,500 ($100,000) $219,500 ($22,250) ($85,605)