There are 180 students doing sanitation, and they are divided into 5 teams on average, and each team is divided into 4 groups. How many people are there on average in each group?
有180名学生做卫生，平均分成5队，每队分成4组，平均每组有多少人？
<gadget id="calculator">180 / 5 / 4</gadget>
<output>9</output>

<result>9</result>