A company sold some merchandise on November 7, 2020. The sales invoice included the following information: merchandise price, $13000; transportation cost, $450; terms 4/12, n/50, FOB Destination (the appropriate party made a cash payment for the transportation on the date of the initial transaction). Assuming that a credit for merchandise returned of $400 is granted prior to payment and that the payment was received on November 18, 2020, what is the amount of discount (if any) granted (write 0 in the answer if no discount is awarded)?

Just provide the answers ASAP (within 15 minutes) no need for solutions & explanation for now.