The school bought back 480 skipping ropes and distributed them to 6 grades on average, with 4 classes in each grade. How many skipping ropes can each class get on average?
学校买回480根跳绳，平均分给6个年级，每个年级4个班．平均每班能分到多少根跳绳？
<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<gadget id="calculator">480 / 24</gadget>
<output>20</output>

<result>20</result>