The first step is 10 meters long, 0.8 meters wide, and 0.5 meters high. There are 12 steps from the first floor to the second floor, and 18 steps on each floor from the second floor to the sixth floor. What is the surface area of the steps in square meters?
一级台阶的长10米、宽0.8米、高0.5米，从一楼到二楼有12级台阶，二楼到六楼每层有18级台阶，台阶的表面积多少平方米．
<gadget id="calculator">10 * 0.8</gadget>
<output>8</output>

<gadget id="calculator">10 * 0.5</gadget>
<output>5</output>

<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">6 - 2</gadget>
<output>4</output>

<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<gadget id="calculator">12 + 72</gadget>
<output>84</output>

<gadget id="calculator">13 * 84</gadget>
<output>1_092</output>

<result>1_092</result>