Please work out each part of problem and help me understand each step. Thanks!

Sales of Volkswagens have grown steadily at auto dealerships in Nevada during the past 5 years (see table below). Using exponential smoothing with a smoothing constant ( ) 0.30 and a starting forecast of 410.00, the following sales forecast has been developed: The MAD for a forecast developed using exponential smoothing with =0.30 is sales (round your response to two decimal places). Forecasted sales for years 2 through 6 using exponential smoothing with =0.60 and a starting forecast of 410.00 are (round your responses to two decimal places): The MAD for a forecast developed using exponential smoothing with =0.60 is sales (round your response to two decimal places). Forecasted sales for years 2 through 6 using exponential smoothing with =0.90 and a starting forecast of 410.00 are (round your responses to two decimal places): The MAD for a forecast developed using exponential smoothing with =0.90 is sales (round your response to two decimal places)