Using the Following Summary of Results, What Are the Values

Using the following summary of results, what are the values that have been replaced by letters? (Assume a between-groups, fixed-factors model.)
$\begin{array}{lcccc}\text { Source of } &\text { SS } & d f & \text { MS } & \text { F } \\\text { Variation } && & & \\\text { Factor A } &500 & 2 & \mathrm{H} & \mathrm{J} \\\text { Factor B } &\text { C } & 3 & 200 & \mathrm{~K} \\\text { AB Interaction } &900 & \text { F } & \mathrm{I} & \mathrm{L} \\\text { Within } &\text { D } & 60 & 50 & \\\text {Total } &\text { E } & \text { G } & &\end{array}$
-G_____