8.78×10−7kWh8.78 \times 10^{-7} \mathrm{kWh}8.78×10−7kWh
0.78×10−7kWh0.78 \times 10^{-7} \mathrm{kWh}0.78×10−7kWh
2.78×10−7kWh2.78 \times 10^{-7} \mathrm{kWh}2.78×10−7kWh
7.28×10−7kWh7.28 \times 10^{-7} \mathrm{kWh}7.28×10−7kWh