Grandma Wang's household electricity this month is 80 kWh, and the electricity bill is 46.4 yuan on May. How much is electricity per kilowatt-hour? (solution by equation)
这个月王奶奶家用电量是80千瓦时，5交电费46.4元．每千瓦时电费多少元？(用方程解)
<gadget id="calculator">46.4 / 80</gadget>
<output>0.58</output>

<result>0.58</result>