Helping with getting the sample size?

I would appreciate any help I can get with this question.

Suppose we wish to select a simple random sample without replacement from a population of size 1000 to estimate the proportion, P, of population members with a particular characteristic, and we want the relative standard error (RSE) to be about 8%. From a previous survey we have a reliable estimate, 0.32, of this proportion.

Find the minimum sample size required to meet this sample design constraint.

My working:

RSE(P-hat)={SE(P-hat)}/{P-hat}

=>SE(P-hat)=0.08x0.32

=0.0256

SE(P-hat)=sqrt(V-hat)(P-hat))

=>(V-hat)(P-hat))=6.5536x10^{-4}

V-hat=1/n(1-n/N)(n/N-1)(P-hat)(1-(V-hat)))

but solving for n, I got a number less than 1! What have I done wrong?!?! Please help :)

(and sorry I didn't use Latex, I got an error :( )