A piece of cuboid wood has a base of 4 decimeters square and a height of 1.5 decimeters. What is the surface area of this piece of wood?
一块长方体的木料，底面是4分米的正方形，高1.5分米，这块木料的表面积是多少平方分米？
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">4 * 1.5</gadget>
<output>6</output>

<gadget id="calculator">16 + 6 + 6</gadget>
<output>28</output>

<gadget id="calculator">28 * 2</gadget>
<output>56</output>

<result>56</result>