What mass of Fe2O3 would react with 20.00 g of Zn?

The chemical equation for this reaction is: 3 Zn + Fe2O3 → 2 Fe + 3 ZnO

I believe it's about 16 grams. 3 Zn is almost 200 amu and there's no need to change anything stoichiometrically so if u find the amu of Fe2O3 u get 158 so divide both by 10 and convert them to grams [just change amu to grams numbers stay the same] and u should get about 16g