Be sure to answer all parts. Enter your answer in scientific notation.

Carry out the following calculation, paying special attention to significant figures, rounding, and units:

$\frac{(1\mathrm{.}75{10}^{-4}\frac{\text{m}\text{o}\text{l}}{L}{)}^2(3\mathrm{.}0{10}^{-3}\frac{\text{m}\text{o}\text{l}}{L})}{(8\mathrm{.}21{10}^{-5}\frac{\text{m}\text{o}\text{l}}{L})(2\mathrm{.}41{10}^{-2}\frac{\text{m}\text{o}\text{l}}{L}{)}^3}=,\frac{L}{m}ol$