There are 3 people in Bing Bingjia, and the living area is 72 square meters. There are 5 people in Lelejia, with a living area of 85 square meters. How many square meters is the per capita living area of Bingbingjia larger than that of Lelejia?
兵兵家有3口人，居住面积是72平方米．乐乐家有5口人，居住面积有85平方米．兵兵家的人均居住面积比乐乐家大多少平方米？
<gadget id="calculator">72 / 3</gadget>
<output>24</output>

<gadget id="calculator">85 / 5</gadget>
<output>17</output>

<gadget id="calculator">24 - 17</gadget>
<output>7</output>

<result>7</result>