Jack asked Jill to marry him, and she had accepted under one condition $,$ Jack must buy her a new, $340,000$ Rolls$-$ Royce phantom Jack currently halls$-$Royce Phantom Jack currently has $58\mathrm{.}990$ that he may invest. He has found a mutual fund with and expected annual return of $5$ percent in which he will place the money. How long will it take Jack to win Jill hand in marriage? Ignore taxes and inflation.