Please check if the workbook is correct?

Given information: Discount rate: 8%, Lease term: 11 years, Annual lease payment: $80000, Bargain purchase options: $30000

Interest rate n table 2 (PV) table 6 (PVAD) 8% 11 0.42888 7.71008 Bargain Purchase Option Annual Payment Present Value of BPO Present Value of Annuity Total Present Value 30000 80000 12866 616806 629673 payments effective interest decrease in balance date 1/1/2016 1/1/2016 12/31/2016 12/31/2017 12/31/2018 12/31/2019 12/31/2020 12/31/2021 12/31/2022 12/31/2023 12/31/2024 80000 80000 80000 80000 80000 80000 80000 80000 80000 30000 0 43974 41092 37979 34617 30987 27066 22831 18257 13318 80000 36026 38908 42021 45383 49013 52934 57169 61743 166476 outstanding balance 629673 549673 513647 474738 432717 387335 338322 285387 228218 166476 0