There are 4 people in Xiaohong's family. Last month, the household used 80 kilowatt-hours of electricity. The price of electricity per kilowatt-hour was 0.68 yuan. How much is the average electricity bill per person?
小红家有4口人，上个月家庭用电共80度，每度电的价钱是0.68元，平均每人付电费多少元？
<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<gadget id="calculator">0.68 * 20</gadget>
<output>13.6</output>

<result>13.6</result>