The electricity consumption of Tonglejia in October is 120 kwh, which is 1/5 less than that in September. How much is the electricity consumption of Tonglejia in September?
同乐家十月份的用电量是120度，比九月份节省(1/5)，同乐家九月份的用电量是多少度？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">120 / (4/5)</gadget>
<output>150</output>

<result>150</result>