Parts of complex numbers z=4.1i+85 re(z)= im(z)=

Variable z = a+bi is normally used to represent a complex number.
where a is the real number of z (Re z) while b is the imaginary part of z (im z)
Therefore in this case; z=4.1 i +85, therefore
Re(z) =85
Im(z) = 4.1

There would be 36.35 pounds