You are evaluating the balance sheet for Goodman's Bees Corporation. From the balance sheet you find the following balances: cash and marketable securities = $560,000, accounts receivable = $2,000,000, inventory = $2,500,000, accrued wages and taxes = $610,000, accounts payable = $910,000, and notes payable = $710,000. Calculate Goodman's Bees' net working capital.