Fatima purchased 4 tires by mail order. She paid $52.80 per tire plus $5.60 per tire for ship-ping and handling. There is no sales tax on this purchase because the tires were purchased out of state. She also had to pay $8.56, including tax, per tire for mounting and balancing. At a local tire store, her total for the 4 tires with mounting and balancing would be $324 plus an 8% sales tax. How much did Mary save by purchasing the tires through the mail?