Sacha buys a computer costing $1470 on her credit card. Her bank offers a 30-day statement period and then a further 10 days interest free. After that time, the bank
charges interest at a rate of 18.5% per annum compounding daily.
Sacha makes the purchase on 10 January, which is day 12 of her statement period. She
intends to pay off the credit card on 1 March. At this date, how much will she need to
pay back? (Assume no interest is payable on the last day).