Li Ming's height is 1.5 meters, and his shadow length is 2.4 meters. If the shadow length of a building is 40 meters measured at the same time and place, how tall is the building? (Answer with proportional knowledge)
李明的身高1.5米，他的影长是2.4米．如果同一时间同一地点测得一栋楼房影长40米，这栋楼有多高？(用比例知识解答)
<gadget id="calculator">1.5 * 40</gadget>
<output>60</output>

<gadget id="calculator">60 / 2.4</gadget>
<output>25</output>

<result>25</result>