An apple initially has a water content of $0\mathrm{.}82$ g water$/$g undried apple. It is dried to a water content of $0\mathrm{.}21$ g water$/$g dried apple. Only water is removed during drying. If the initial sugar content of the apple is $0\mathrm{.}15$ g sugar$/$g undried apple, what is the sugar content of the dried apple?