Superior Furniture has expanded its operations over the last 5 years. their finance director knows they have spent a lot of money over this time and was curious as to how much they have spent on net working capital. She hands you parts of the calance sheets for the comany for 2009 and 2014. Note the following assets and liabilities Balance sheet 2009 inventory 309 accounts receivable 242 PP&E 348 accounts payable 221 short term debt 366 Balance sheet 2014 inventory 763 accounts receivable 852 PP&E 700 accounts payable 480 short term debt 578 how much has superior furniture spent on net working capital in total over the last 5 years