Working capital : Winston Electronics reported the following information at its annual meetings.

Working capital: Winston Electronics reported the following information at its annual meetings. The company had cash and marketable securities worth $1,236,380, accounts payables worth $4,160,420, inventory of $7,121,720, accounts receivables of $3,488,350, notes payable worth $1,152,410, and other current assets of $122,520. What is the company's net working capital?