please help

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Problem 4-21 Interest-on-Interest (LG4-3) Consider a $2,100 deposit earning 9 percent interest per year for four years. What is the future value? (Do not round intermediate calculations. Round your answer to 2 decimal places.) How much total interest is earned on the original deposit? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Total interest earned _ How much is interest earned on interest? (Do not round intermediate calculations. Round your answer to 2 decimal places.) Interest earned on interest _