DCM Clocks received the following two invoices from its supplier: $27,000 on July 24, 2014 and $21,000 on August 8, 2014. If the payment terms on both the invoices were 2.5/10, 1/25, n/60, calculate the amount that must be paid by DCM Clocks to settle both of these invoices on August 18, 2014.