A student sets up the following equation to solve a problem in solution stoichiometry.

$($The $?$ stands for a number the student is going to calculate.$)$

Enter the units of the student's answer.$\frac{(1\mathrm{.}05(mol))(\frac{1(mL)}{{10}^{-3}(L)})}{(3\mathrm{.}1\frac{\text{m}\text{o}\text{l}}{L})}=$