Brief Exercise 13-9 (Part Level Submission) At December 31, 2017, Riverbed Corporation owes $500,000 on a note payable due February 15, 2018. Collapse question part (a) If Riverbed refinances the obligation by issuing a long-term note on February 14 and using the proceeds to pay off the note due February 15, how much of the $500,000 should be reported as a current liability at December 31, 2017? (Do not leave any answer field blank. Enter 0 for amounts.) The amount to be reported as a current liability at December 31, 2017 $