There is a square nursery, one side is against the wall, and the other three sides are surrounded by bamboo fences. The total length of the bamboo fence is 150 meters. If 6 roses can be planted per square meter in the nursery, how many roses can be planted in this nursery?
有一个正方形苗圃，一面靠墙，其它三面围竹篱笆，竹篱笆的总长是150米，如果苗圃内每平方米能种6棵月季，则这块苗圃能中多少棵月季？
<gadget id="calculator">150 / 3</gadget>
<output>50</output>

<gadget id="calculator">50 * 50 * 6</gadget>
<output>15_000</output>

<result>15_000</result>