Answer:
[tex]F=k\frac{|q_{1}|.|q_{2}|}{r^{2}}\\F=8.98*10^{9}\frac{(1.6*10^{-19})^{2}}{(8*10^{-18})^{2}}=3592000N[/tex]
I've written all the needed equations for you. All you have to do is some replacements.
Please do not hesitate to ask further questions.
