a $AC{u}^{2+}$ ion$-$selective electrode was calibrated using metal ion buffers with a constant ionic strength. The response of the electrode to these buffer solutions is shown in the table. Additionally, the response of the electrode to a solution containing $C{u}^{2+}$ and $M{g}^{2+}$ is also shown in the table. From

$\backslash$table$[[[C{u}^{2+}](M),[M{g}^{2+}](M),$Response $($mV$)],[2\mathrm{.}32{10}^{-6},0,-62\mathrm{.}14],[6\mathrm{.}01{10}^{-4},0,5\mathrm{.}60],[2\mathrm{.}32{10}^{-6},0\mathrm{.}0126,-32\mathrm{.}44]]$

this information, calculate the selectivity coefficient for $M{g}^{2+},K_{C{u}^{2+},M{g}^{2+}}^P,$ for this $C{u}^{2+}$ ion$-$selective electrode.

$K_{C{u}^{2+},M{g}^{2+}}^{\text{P}\text{o}\text{t}}=$