The electricity bill of Mingming’s family was 120 yuan last month, which is 1/5 less than last month. How much did you save this month compared to last month?
明明家上个月的电费是120元，这个月比上个月节省了(1/5)．这个月比上个月节省了多少元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">120 * (1/5)</gadget>
<output>24</output>

<result>24</result>