The spreadsheet lists real GDP $(Y)$ and the components of aggregate planned expenditure in billions of dollars.
$$\begin{array}{|c|c|c|c|c|c|c|c|}
\hline & \mathrm{A} & \mathrm{B} & \mathrm{C} & \mathrm{D} & \mathrm{E} & \mathrm{F} & \mathrm{G} \\
\hline 1 & & \mathrm{Y} & \mathrm{C} & 1 & \mathrm{G} & \mathrm{X} & \mathrm{M} \\
\hline 2 & \mathrm{A} & 100 & 110 & 50 & 60 & 60 & 15 \\
\hline 3 & \mathrm{B} & 200 & 170 & 50 & 60 & 60 & 30 \\
\hline \mathbf{4} & \mathrm{C} & 300 & 230 & 50 & 60 & 60 & 45 \\
\hline 5 & \mathrm{D} & 400 & 290 & 50 & 60 & 60 & 60 \\
\hline 6 & E & 500 & 350 & 50 & 60 & 60 & 75 \\
\hline 7 & F & 600 & 410 & 50 & 60 & 60 & 90 \\
\hline
\end{array}$$
Calculate autonomous expenditure. Calculate the marginal propensity to consume.