Listed below are year-end account balances ($ in millions) taken from the records of Symphony Stores. Accounts receivable-trade Building and equipment Cash-checking Interest receivable Inventory Land Notes receivable (long-term) Petty cash fund Prepaid rent Supplies Trademark Accounts payable-trade Accumulated depreciation Additional paid in capital Allowance for uncollectible accounts Cash dividends payable Common stock, at par Income tax payable Notes payable (long-term) Retained earnings Deferred revenues TOTALS Debit Credit 730 920 34 30 16 150 450 5 20 8 40 560 80 485 20 30 15 65 800 308 40 2,403 2,403 What is the amount of working capital for Symphony