Presented below are the ending balances of accounts for the Kansas Instruments Corporation at December 31, 2021. Credits $ Debits 34,000 158,000 38,000 114,000 17,000 $ 19,000 46,000 64,000 1,580,000 634,000 Account Title Cash Accounts receivable Raw materials Notes receivable Interest receivable Interest payable Investment in debt securities Land Buildings Accumulated depreciation-buildings Work in process Finished goods Equipment Accumulated depreciation-equipment Patent (net) Prepaid rent (for the next two years) Deferred revenue Accounts payable Notes payable Restricted cash (for payment of notes payable) Allowance for uncollectible accounts Sales revenue Cost of goods sold Rent expense 56,000 103,000 328,000 144,000 134,000 74,000 50,000 194,000 540,000 94,000 27,000 1,080,000 464,000 42,000 Additional Information: 1. The notes receivable, along with any accrued interest, are due on November 22, 2022. 2. The notes payable are due in 2025. Interest is payable annually. 3. The investment in debt securities consist of treasury bills, all of which mature next year. 4. Deferred revenue will be recognized as revenue equally over the next two years. Required: Determine the company's working capital (current assets minus current liabilities) at December 31, 2021. (Amounts to be deducted should be indicated by a minus sign.)