Xiaohong’s family used 52 kWh of electricity last month, and it saved (1/5) this month compared with last month. If the electricity per kWh is 0.5 yuan, how much did Xiaohong’s family save this month?
小红家上个月用电52千瓦时，本月比上月节约(1/5)，如果每千瓦时的电0.5元，小红家本月节约了多少元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">52 * (1/5) * 0.5</gadget>
<output>5.2</output>

<result>5.2</result>