im confused about this question

Using the same data as in Question 7, what is the mean absolute deviation (MAD) for the data using the exponential smoothing method? Monthly sales for Computer Success are shown below: Given the data, what is the average forecast error (i.e., mean bias) if you use an exponential smoothing technique to complete the forecast table? In this case, the alpha value is 0.60 and your January forecast was 3200 units. Using the same data as in Question 7, what is the mean absolute percent error (MAPE) for the data using the exponential smoothing method? For this case, enter your percentage as a whole number (e.g., 12 as opposed to 12% or 0.12 )