Calculate the $pH$ of a $0\mathrm{.}055M$ solution of $)=(1\mathrm{.}8{10}^{-5}$

$\backslash$table$[[4\mathrm{.}74],[12\mathrm{.}74],[9\mathrm{.}26],[5\mathrm{.}26],[8\mathrm{.}74]]$