The following tabulations are actual sales of units for six months and a starting forecast in January. ACTUAL FORECAST January $10686$ February $102$ March $105$ April $88$ May $75$ June $104$ a$.$ Calculate forecasts for the remaining five months using simple exponential smoothing with $\backslash$alpha $=0\mathrm{.}3.$ b$.$ Calculate the MAD for all the forecasts, including January's. $($Round your answer to $1$ decimal place.$)$