A four-story teaching building has 6 classrooms on each floor, and each classroom is equipped with 12 lamps. How many lamps are installed in total?
一座四层的教学楼，每层有6间教室，每间教室装12盏灯，一共要装多少盏灯？
<gadget id="calculator">6 * 4 * 12</gadget>
<output>288</output>

<result>288</result>