. Gabe wants to buy Sally an expensive necklace to show his true feelings for her. He is going to use his credit card. Today is the first day of the new, 28-day billing cycle. Gabe's current balance on his credit card is $3,260 and the APR is 21%. The necklace costs $1,800 and it is the only thing Gabe is going to charge to his card this month. How much in finance charge can Gabe save by charging the necklace on the last day of the cycle versus the first day of the billing cycle? Billing