Rearrange this formula please

[MikeNZ]

Homework Statement

I'm doing springs in Engineering, need to find 'n' = Number of coils, only equations I have are..

Compression (let's give it a symbol &)

& = ( 8FC³n ) / Gd

And

K = Gd / 8C³n

Thanks..

Homework Equations

The Attempt at a Solution

 

[statdad]

All right - you listed the equations. Which one do you need to solve, and how did you start?