2.25×1022.25 \times 10^{2}2.25×102
2.29×1072.29 \times 10^{7}2.29×107
3.92×1073.92 \times 10^{7}3.92×107
9.32×1079.32 \times 10^{7}9.32×107
2.5×1010kWh2.5 \times 10^{10} \mathrm{kWh}2.5×1010kWh