Part 1: Okanagan Refrigeration manufactures and markets commercial refrigeration systems for food trucks and specialized transport trucks. It was disclosed in notes to the company's financial statements that estimated warranty costs are accrued at the time products are sold. Assume that in 2020 warranty costs are estimated at $329,000 and that the related warranty work was actually paid for during 2021. Required: Prepare journal entry to show the effect on financial statements due to warranties in 2020 and 2021.