A cuboid plank is 2.5 meters long, 4 decimeters wide, and 12 centimeters high. What is its surface area?
一块长方体木板，长2.5米，宽4分米，高12厘米，它的表面积是多少平方分米？
<gadget id="calculator">2.5 * 10</gadget>
<output>25</output>

<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">12 / 10</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">25 * (6/5)</gadget>
<output>30</output>

<gadget id="calculator">4 * (6/5)</gadget>
<output>24/5 = around 4.8</output>

<gadget id="calculator">100 + 30 + (24/5)</gadget>
<output>674/5 = around 134.8</output>

<gadget id="calculator">(674/5) * 2</gadget>
<output>1_348/5 = around 269.6</output>

<result>1_348/5 = around 269.6</result>