If a 0.8-meter-long cuboid piece of wood is sawed into three sections on average, the surface area increases by 2.4 square decimeters. What is the volume of this piece of wood in cubic decimeters?
把一根长0.8米得长方体木料平均锯成三段，表面积增加了2.4平方分米，这根木料的体积是多少立方分米？
<gadget id="calculator">2.4 / 4</gadget>
<output>0.6</output>

<gadget id="calculator">0.8 * 10</gadget>
<output>8</output>

<gadget id="calculator">0.6 * 8</gadget>
<output>4.8</output>

<result>4.8</result>