Recycling aluminum consumes 95%% less energy than refining the ore. Consider a material that requires a total energy of 100 kWhkWh for refining. If recycling requires 95%%less energy compared to refining, the same mass of material can be recycled using 5 kWhkWh of energy because 100 kWhkWh 95 kWhkWh = 5 kWhkWh. The 95 kWhkWh is the energy saved.

About 17 kWhkWh of electricity is required to refine 1.0 kgkg of aluminum from its ore (17 kWh/kgkWh/kg). How many million kWhmillion kWh of energy is saved if a plant recycles 90 million kg million kg of aluminum?

Express your answer numerically to two significant figures in million kWhmillion kWh. Since the units are million kWhmillion kWh, you may skip multiplying by 106106.