Refer to the following list of liability balances at december 31, 2019. accounts payable $15,000 employee health insurance payable $1,150 employee income tax payable $600 estimated warranty payable (due 2020) $1,400 long-term notes payable (due 2022) $40,000 ficalong dashoasdi taxes payable $1,060 sales tax payable $670 mortgage payable (due 2023) $15,000 bonds payable (due 2024) $54,000 current portion of long-term notes payable $10,500 what is the total amount of long-term liabilities?