Steve borrowed $\backslash (\backslash$$ $320,000\backslash )$ on March $1,2015.$ This amount plus accrued interest at $\backslash (8\backslash \%\backslash )$ compounded semiannually is to be repaid March $1,2025.$ To retire this debt, Steve plans to contribute to a debt retirement fund five equal amounts starting on March $1,2020,$ and for the next $4$ years. The fund is expected to earn $\backslash (6\backslash \%\backslash )$ per annum.

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How much must Steve contribute each year to provide a fund sufficient to retire the debt on March $1,2025?($Round factor values to $5$ decimal places, e$.$g$.1\mathrm{.}25124$ and final answer to $2$ decimal places, e$.$g$.4,585\mathrm{.}83.)$

Annual contribution to debt retirement fund