A cuboid of wood has a length of 8 decimeters, a width of 2 decimeters, and a height of 4 decimeters. What is the surface area of this cuboid wood in square decimeters?
一根长方体木料，长是8分米，宽是2分米，高是4分米，这根长方体木料的表面积是多少平方分米．
<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">16 + 32 + 8</gadget>
<output>56</output>

<gadget id="calculator">56 * 2</gadget>
<output>112</output>

<result>112</result>