Define a depreciation table for the Sum of Digits depreciation method. Example: If a fixed asset is depreciated over 4 years, then the depreciation for each year is calculated like this: Sum of Digits = 1 + 2 + 3 + 4 = 10. 1. year = 4/10 2. year = 3/10 3. year = 2/10 4. year = 1/10