You have installed a double pane storm window in your study in order to cut down on the thermal heat loss during the winter months.$$ In the industry,$$they sell the$$insulation panels according to the R$-$value, which is defined by$$; where$$is thickness of panel and k the thermal conductivity.$$ The double pane window with $1/2"$air space is rated with a value of $0\mathrm{.}359$Km$2/$W$.$

The window is of dimension $16$ft by $2\mathrm{.}5$ft$.$The inside temperature of the window is $70$F while the outside temperature of the window is $50$F$.$

How much heat is lost through the storm window per month $($ in kwh$$units $)?(1$ m $=3\mathrm{.}281$ ft$)$

Give the answer in kwh$$units$,$ to $1$ decimal place.