[Hazel]

I have a question about error propagation and it is quite basic...

The question is

x=2.843(+-0.002)
y=58.5
z=100.00(+-0.08)

P=(x/y)/z. Find P.

My calculation is,

x/y=0.04860(+-0.00003)   I take four significant figures here.

P=0.04860(+-0.00003) /100.00(0.08)

Rabs=(((0.00003/0.04860)^2+(0.08/100.00)^2)^(1/2))*(0.04860/100.00)
      =4.912 x 10^-7

P=4.86 x 10^-4(+- Rabs)
I have found problem here..I don't know how to round up and how many figures should I take here.