Listed below are year-end account balances ($ in millions) taken from the records of Symphony Stores.

	Debit		Credit
Accounts receivable-trade	716
Building and equipment	923
Cash-checking	38
Interest receivable	33
Inventory	27
Land	164
Notes receivable (long-term)	464
Petty cash funds	6
Prepaid rent	27
Supplies	12
Trademark	47
Accounts payable-trade			581
Accumulated depreciation			69
Additional paid-in capital			473
Allowance for uncollectible accounts			16
Cash dividends payable			28
Common stock, at par			13
Income tax payable			61
Notes payable (long-term)			884
Retained earnings			303
Deferred revenues			29
TOTALS	2,457		2,457

What is the amount of working capital for Symphony?