After sawing a 2-meter-long cuboid into two pieces, the surface area increases by 6 square decimeters. What is the original volume of this piece of wood?
将2米长的长方体木料锯成两段后，表面积增加了6平方分米，原来这根木料的体积是多少立方分米？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

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

<gadget id="calculator">3 * 20</gadget>
<output>60</output>

<result>60</result>