Company A exports 100 cases of Good X to Los Angles. The volume and gross weight per case are 40cm × 50cm × 30cm and 20kg respectively. Good X is classified as Class 9 and the freight for Class 9 is calculated on W/M. The tariff (China — Los Angles) shows that the basic freight rate for Class 10 is US$80, with 30% transshipment surcharges, How much is the total freight?