I need help with the last requirement, Double Declining Balance. I don't understand it.

Thanks!

Golden Fried Chicken bought equipment on January 2, 2018, for $18,000. The equipment was expected to remain in service for four years and to operate for 3,000 hours. At the end of the equipment's useful life, Golden estimates that its residual value will be $3,000. The equipment operated for 300 hours the first year, 900 hours the second year, 1,200 hours the third year, and 600 hours the fourth year. Read the requirements. 12-31-2019 15,000 + 4 years 3,750 7,500 10,500 12-31-2020 15,000 + 4 years = 3,750 11,250 6,750 12-31-2021 15,000 + 4 years 3,750 15,000 3,000 Before calculating the units-of-production depreciation schedule, calculate the depreciation expense per unit. Select the formula, then enter the amounts and calculate the depreciation expense per unit. Cost Residual value Useful life in units ( ($ ) + ) + Depreciation per unit $ 5 18,000 $ 3,000 3,000 Prepare a depreciation schedule using the units-of-production method. Book Value Units-of-Production Depreciation Schedule Depreciation for the Year Asset Depreciation Number of Depreciation Accumulated Date Cost Per Unit Units Expense Depreciation 1-2-2018 $ 18,000 12-31-2018 $ 5 x 300 = $ 1,500 $ 1,500 12-31-2019 5 x 900 = 6,000 12-31-2020 5 1 200 1 6,000 12,000 12-31-2021 5 3,000 15,000 $ $ 18,000 16,500 4,500 12,000 6,000 3,000 2 x (1+4) DB) method. (Enter a "0" for any items with a zero value.) Prepare a depreciation schedule using the doubl Double-Declining-Balance Depreciation Sche Depi 4 years Asset Book 4 years x 2 Book Depreciation Accumulated Expense Depreciation Date Cost Value Value 3,000 18000 1-2-2018 12-31-2018 18000 * 2 *(1+4) = 12-31-2019 = 12-31-2020 = 12-31-2021