Determine interest to be paid on a card's next billing date

Question

The average daily balance of a credit card for the month of January was $$8,000,$ and the unpaid balance at the end of the month was $$9,000.$ If the annual percentage rate is $21\mathrm{.}6\%$ of the average daily balance, what is the total balance on the next billing date February $1?$ Round your answer to the nearest cent.

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