Bob is project manager for WrenMart$$s third$-$party distribution and logistics deal. WrenMart$$s estimated cost of capital, appropriate for this project, is $8\mathrm{.}30\%$ per year. The project$$s free cash flows are estimated as follows:

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Thereafter, free cash flow is expected to grow at a rate of $3\mathrm{.}50\%$ per year. Help Bob by$$computing the payback period of the project.