Open question: Phil had an unpaid balance of $1.854.50 on its credit card statement at the beginning of December.?

Phil had an unpaid balance of $1854.50 on its credit card statement at the beginning of December, which he carried out a payment of $45 during the month, if the interest rate on Phils credit card 2,5% per month on the unpaid balance find the financial fee and the new balance on 1 January financial fee = $44,47 were; new balance = $1.853.97 financial fee = $50.47; new balance = $1.859.97 financial fee = $56.50; new balance = $1.866.00 financial fee = $46.36; new balance = $1.855.86