There are 8 steps at the entrance of the school auditorium, each step is 6 meters long, 0.4 meters wide and 0.2 meters high. The art festival school plans to lay a red carpet on the steps at the entrance of the auditorium. How many square meters of red carpet do you need to buy at least?
学校礼堂的门口有8级台阶，每级台阶长6米，宽0.4米，高0.2米．艺术节学校准备给礼堂门口的台阶铺上红地毯，至少需要买多少平方米的红地毯？
<gadget id="calculator">4 * 0.6</gadget>
<output>2.4</output>

<gadget id="calculator">4 * 0.2</gadget>
<output>0.8</output>

<gadget id="calculator">2.4 + 0.8</gadget>
<output>3.2</output>

<gadget id="calculator">3.2 * 8</gadget>
<output>25.6</output>

<result>25.6</result>