There are 72 primary school students in the special department, and every 4 people use a long desk. How many long desks are needed?
特色部小学生有72名学生，每4人用一张长课桌，需要多少张长课桌？
<gadget id="calculator">72 / 4</gadget>
<output>18</output>

<result>18</result>