A 2-meter-long square log is cut into 3 sections, and the surface area is increased by 8 square decimeters. What is the volume of this piece of wood.
把一根2米长的方木横截成3段，表面积增加8平方分米．这根木料的体积是多少．
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">2 * 20</gadget>
<output>40</output>

<result>40</result>