There are 8 steps in front of the cinema gate, each step is 7 meters long, 0.4 meters wide and 0.2 meters high. What is the minimum square meter required to carpet these steps?
电影院大门前有8级台阶，每级台阶长7米，宽0.4米，高0.2米．给这些台阶铺上地毯，至少需要多少平方米？
<gadget id="calculator">7 * 0.4</gadget>
<output>2.8</output>

<gadget id="calculator">0.4 * 0.2</gadget>
<output>0.08</output>

<gadget id="calculator">2.8 + 0.08</gadget>
<output>2.88</output>

<gadget id="calculator">2.88 * 8</gadget>
<output>23.04</output>

<result>23.04</result>