need help rearranging an equation in physics?V= [1/4??] [Q/R]?

[Adam P]

an some one show me how to rearrange and solve for Q

V= [1/4??] [Q/R]

this is an eletric voltage equation and i need to solve for Q can some one go through it slowly for me please thanks

[Manik]

V=Q/[4.pie.epcilon.R]
> Q=4.pie.epcilon. R.V