Medium Sized Retailer's balance sheet showed total current assets of $250,000, all of which were required in operations. Its current liabilities consisted of $61,000 of accounts payable, $40,000 of 7% short-term notes payable to the bank, and $19,750 of accrued wages and taxes. What was its net operating working capital? Enter your answer rounded to two decimal places. Do not enter $ or comma in the answer box. For example, if your answer is $12,300.456 then enter as 12300.46 in the answer box