The net working capital of the firm is?

Tre-Bien Bakeries generated net income of $233,412 this year. At year end the company had accounts receivable of $47,199, inventory of $63,781, and cash of $21,461. It also had accounts payable of $51,369, and notes payable of $11,417 and accrued taxes of $6,145. The net working capital of the firm is