Three people planted 168 trees in one week. On average, how many trees are planted per person per day? (Calculated in at least two ways)
三个人一周共植了168棵树．平均每人每天植了几棵树？(至少用两种方法列式计算)
<gadget id="calculator">168 / 3 / 7</gadget>
<output>8</output>

<result>8</result>