Calculate the cost of raw material used to produce grey cast iron, grade 150 when using EAF/1. Charged material is as follows, foundry returns, bought cast iron, steel scrap, graphite (sascarb), pig iron, FeSi and SiMn additions. Table 1-2 show chemical composition of Grade 150 of grey cast iron. Show all the steps. Assume there is no loss of elements during melting