The Nernst equation

Using the Nernst equation, calculate the equilibrium potential for the sodium ion if the concentration of sodium outside is 130 mM, and the concentration of sodium in the cytoplasm is 12 mM. Show your work.”

I do not necessarily require the answer (though it would be helpful to know if I do it right), but step by step on how to set this up would be helpful. Would the equation be the same in the situation potassium (given different numbers of course). Or would something change for that?

Thank you.