In 1626, John Mark, on behalf of Dutch West India Company, purchased the entire island of Manhattan for $24, which became known as New Amsterdam. Suppose that instead of this purchase, he invested $24 in a bank account.

(a) If the bank account offered 5% interest rate, what would have been the value of this account in 2020? in billion

(b) What would have been the value of this account in 2020 if the bank offered 6% interest rate? in billion

(c) What would have been the value of this account in 2020 if the bank offered 7% interest rate? in trillion