Presented below is the ending balances of accounts for the Kansas Instruments Corporation at December 31, 2016. The note receivable, along with any accrued interest, is due on November 22, 2017. The note payable is due in 2020. Interest is payable annually. The marketable securities consist of treasury bills, all of which mature in the next year Deferred revenue will be earned equally over the next two years. Determine the company's working capital (current assets minus current liabilities) at December 31, 2016 (Amounts to be deducted should be indicated by a minus sign.)