What formula can I use to calculate the Depreciation in this example?

$ (10,000,000.00) 20 Years 21 initial Cost 22 Revenues 23 Fixed Costs 24 Variable costs 25 Depreciation $ 4,031,325.00 $ 4,172,421.38 $ 4,318,456.12 $ 4,469,602.09 $ 4,626,038.16 $ 4.787,949.50 $ 4,955,527.73 $ (414,000.00) S (428,490.00) $ 443,487.15) $ (459,009.20) $ (475,074.52) $ (491,702.13) $ (508,911.71) $ (517,500.00) $ (535,612.50) $ (554,358.94) $ (573,761.50) $ (593,843.15) $ (614,627.66) $ (636,139.63)