You are evaluating the balance sheet for Goodman's Bees Corporation. From the balance sheet you find the following balances: cash and marketable securities = $550,000, accounts receivable = $1,100,000, inventory = $1,600,000, accrued wages and taxes = $520,000, accounts payable = $820,000, and notes payable = $620,000. Calculate Goodman Bees' net working capital.