Anita's monthly credit card statement shows a previous balance of $1,742.56. It also indicates that during the past month, she charged $320.23 worth of purchases to the card and made a $680 payment to the credit card company. Her monthly interest rate is 2.25% on the first $1,200 and 1.25% on amounts over $1,200. Her finance charge is calculated on the previous balance before new charges and payments on the account are made. What is Anita's new balance?