Hemp Airlines $($HA$,$we fly high$)$ is about to buy five CFA$3000$ commuter jets. Each airplane costs $$50$ million. A friendly bank has put together a consortium to finance the deal. The consortium includes a $20\%$ equity investment and an $80\%$ debt component. The debt has an interest rate of $8\%$ annually and is a term loan over $10$ years. At the end of each of the next $10$ years, HA will pay a lease payment of $$35$ million. At the end of the $10-$year lease term, Hemp has the option to buy the aircraft for $$10$ million each; it is anticipated that it will exercise this option in which the planes are priced at their anticipated fair market value. The airplanes will be depreciated on a straight$-$line basis over five years to zero salvage value.

If the equity partner in the lease has a tax rate of $35\%,$ what is its expected compound rate of return?

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