In plain English, explain how depreciation was calculated for years 1-3, for the 5-year column

3. In plain English, explain how depreciation was calculating for years 4-6 (Hint: See MACRS4 solution, end-of-year basis for year 3; divide by 5, but you must explain why you divided by 5).

Depreciation rate for recovery period Year 3-year 10-year 20-year 5-year 7-year 15-year 20.00% 14.29% 10.00% 5.00% 3.750% 33.33% 24.49 18.00 9.50 7.219 44.45 32.00 14.81 19.20 17.49 14.40 8.55 6.677 3 4 11.52 12.49 11.52 7.70 6.177 7.41 11.52 8.93 9.22 6.93 5.713 8.92 6. 5.76 7.37 6.23 5.90 5.285 4.888 8.93 6.55 4.46 6.55 5.90 4.522 8 6.56 4.462 4.461 5.91 5.90 10 6.55 3.28 5.91 11 4.462 4.461 12 5.90 5.91 4.462 13 14 15 5.90 4.461 4.462 5.91 2.95 4.461 16 4.462 4.461 17 18 19 4.462 4.461 20 2.231 21