\( \begin{aligned}C_\mathrm{Total} = &~\sum_{t=1}^{T} R_\mathrm{0} - \frac{A}{2} + A T \\=&~R_\mathrm{0}T - \frac{A}{2}T + A \frac{T(T+1)}{2}= R_\mathrm{0}T + \frac{1}{2}A T^2\end{aligned} \)

I've seen worse.

Seems like it refreshes several times, and the last one isn't too beautiful. :(

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