dont understand what to do, pls help!

Given the following demand data, compute a simple exponential smoothing forecast for alpha values of 0.3 and 0.5. Use the actual value in Period 1 as your starting forecast in Period 2 (Round all your calculations to two decimal points) Period Actual Demand 51 52 1 54 57 51 52 51 51 18 50 47 9 10 11 G=0 Forecast G=05 Forecast period 1 2 3 4 5 5 w 7 8 10 11 12