The garden workers are divided into 5 groups, each group has 9 people, and they have to complete the task of planting 450 saplings. How many trees do each person plant on average?
园林工人分成5个小组，每个小组有9人，要完成450棵树苗的植树任务，平均每人植多少棵？
<gadget id="calculator">5 * 9</gadget>
<output>45</output>

<gadget id="calculator">450 / 45</gadget>
<output>10</output>

<result>10</result>