The basic electricity price for residents in a certain city is 0.40 yuan per kWh. If it exceeds 60 kWh per month, the excess part will be charged at 120% of the basic electricity price. If Xiaoming’s family shares 84 kWh of electricity in March, his family should How much is the electricity bill.
某市居民生活用电基本价格为每千瓦时0.40元，若每月超过60千瓦时，超过部分按基本电价的120%收费，若小明家三月份共用电84千瓦时，他家三月份应交电费多少元．
<gadget id="calculator">60 * 0.4</gadget>
<output>24</output>

<gadget id="calculator">84 - 60</gadget>
<output>24</output>

<gadget id="calculator">120 / 100</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">0.4 * (6/5)</gadget>
<output>0.48</output>

<gadget id="calculator">24 * 0.48</gadget>
<output>11.52</output>

<gadget id="calculator">24 + 11.52</gadget>
<output>35.52</output>

<result>35.52</result>