One of the reactions that occurs in a blast furnace, where iron ore is converted to cast i...

One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron, is

Suppose that 1.64 × 103 kg of Fe are obtained from a 2.62 × 103-kg sample of Fe2O3. Assuming that the reaction goes to completion, what is the percent purity of Fe2O3 in the original sample?