Xiaolan's height is 1.5 meters, and her shadow length is 0.5 meters. At the same time, the shadow length of the school dormitory building is 3 meters. How high is the school dormitory building? (Answer with proportional knowledge)
小兰的身高1.5米，她的影长0.5米，同一时间学校的宿舍楼的影长是3米，学校宿舍楼高多少米？(用比例知识解答)
<gadget id="calculator">1.5 * 3</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 / 0.5</gadget>
<output>9</output>

<result>9</result>