Aunt Liu went to work from 12:00 am to 4:00 pm. She produced a total of 120 toys. How many toys does Aunt Liu produce on average per hour?
刘阿姨从上午12时开始上班，一直工作到下午4时下班，共生产了120个玩具，刘阿姨平均每小时生产多少个玩具？
<gadget id="calculator">120 / 4</gadget>
<output>30</output>

<result>30</result>