There are 5 floors of teaching buildings in Chaoyangxuan, each floor has 4 classrooms, and 8 light tubes are installed in each classroom. How many light tubes need to be installed in total?
朝阳轩共有5层教学楼，每层楼有4个教室，每个教室安8根灯管，一共需要安多少根灯管？
<gadget id="calculator">8 * 4 * 5</gadget>
<output>160</output>

<result>160</result>