can you calculate GDS recovery rate of year 7 by hand i want to see

TABLE 7-3 GDS Recovery Rates (rk) for the Six Personal Property Classes Depreciation Rate for Recovery Period Year 3-yeara 5-yeara 7-yeara 10-yeara 15-yearb 20-yearb 0.3333 0.2000 0.1429 0.1000 0.0500 0.0375 0.4445 0.3200 0.2449 0.1800 0.0950 0.0722 0.1481 0.1920 0.1749 0.1440 0.0855 0.0668 0.0741 0.1152 0.1249 0.1152 0.0770 0.0618 0.1152 0.0893 0.0922 0.0693 0.0571 0.0576 0.0892 0.0893 0.0446 0.0737 0.0655 0.0655 0.0656 0.0655 0.0623 0.0590 0.0590 0.0591 0.0590 0.0528 0.0489 0.0452 0.0447 0.0447 0.0328 0.0591 0.0590 0.0591 0.0590 0.0591 0.0446 0.0446 0.0446 0.0446 0.0446 0.0295 0.0446 0.0446 0.0446 0.0446 0.0446 0.0223 Source: IRS Publication 946. Depreciation. Washington, D.C.: U.S. Government Printing Office, for 2006 tax returns. * These rates are determined by applying the 200% DB method (with switchover to the SL method) to the recovery period with the half-year convention applied to the first and last years. Rates for each period must sum to 1.0000. bThese rates are determined with the 150% DB method instead of the 200% DB method (with switchover to the SL method) and are rounded off to four decimal places