2-meter-long rectangular parallelepiped steel is cut into two sections along the cross-section, and the surface area increases by 0.6 square decimeters. What is the original volume of the rectangular parallelepiped steel?
一根2米长的长方体钢材，沿横截面平均截成两段后，表面积增加0.6平方分米，这段长方体钢材原来的体积是多少立方分米．
<gadget id="calculator">0.6 / 2</gadget>
<output>0.3</output>

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

<gadget id="calculator">0.3 * 20</gadget>
<output>6</output>

<result>6</result>