Hemoglobin contains $0.25 \%$ iron by weight. The molecular weight of Hemoglobin is $89600 u$. Calculate the weight of $K _{4}\left[ Fe ( CN )_{6}\right]$ that can be produced, if all the iron atoms from $4.48 kg$ Hemoglobin are converted into $K _{4}\left[ Fe ( CN )_{6}\right]$ through a series of reactions.