The students participated in the tree planting activity. If 150 saplings are planted per hour, the task can be completed in 6 hours. If you want to complete the task in 5 hours, how many saplings should be planted per hour?
同学们参加植树活动．如果每小时栽150棵树苗，6小时可以完成任务．如果想5小时就完成任务，每小时应栽多少棵树苗？
<gadget id="calculator">6 / 5</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">150 * (6/5)</gadget>
<output>180</output>

<result>180</result>