The water consumption of Xiaohua's family last month was 16 tons, and the price per ton of water was 2.5 yuan. There are 4 people in Xiaohua's family. How much is the water bill per person?
小华家上个月的用水量是16吨，每吨水的价格是2.5元．小华家有4口人，人均水费多少元？
<gadget id="calculator">2.5 / 4</gadget>
<output>0.625</output>

<gadget id="calculator">16 * 0.625</gadget>
<output>10</output>

<result>10</result>