Can you please help me understand how to do this?

Crenshaw Building Supply Co. has a number of long-term bonds outstanding at December 31, 2018. These long-term bonds have the following sinking fund requirements and maturities for the next 6 years. Sinking Fund Maturities 2020 $650,000 $250,000 2021 250,000 300,000 2022 250,000 250,000 2023 450,000 2024 450,000 350,000 2025 450,000 250,000 Indicate how this information should be reported in the financial statements at December 31, 2018