Problem $12-13($Algo$)$

Given the data shown below, use $\backslash$alpha $=0\mathrm{.}2$ and $\backslash$beta $=0\mathrm{.}4$ to create a trend enhanced smoothing based forecast for period $7.$ Assume that FIT$1=20$ and T$1=7\mathrm{.}6.($Round your intermediate calculations and final answer to $1$ decimal place.$)$

Period: $123456$

Demand: $202840495466$

pictureClick here for the Excel Data File