There are 8 boxes of table tennis balls, each box contains 12, and they are sold out in exactly 4 days. How many are sold per day on average?
有8盒乒乓球，每盒装12个，正好4天卖完，平均每天卖多少个？
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<result>24</result>