The water consumption of Xiao Cong's family last month was 24 tons, and the price per ton of water was 2.5 yuan. There are 4 people in Xiaocong's family, how much is the average water bill per person?
小聪家上个月的用水量是24吨，每吨水的价格是2.5元．小聪家有4口人，平均每人付水费多少元？
<gadget id="calculator">2.5 / 4</gadget>
<output>0.625</output>

<gadget id="calculator">24 * 0.625</gadget>
<output>15</output>

<result>15</result>