A 6-meter-long cuboid steel is cut into two sections along the cross section, and the surface area increases by 0.8 square decimeters. What is the volume of the cuboid steel in cubic decimeters?
一根长6米的长方体钢材，沿横截面截成两段后，表面积增加0.8平方分米，这段长方体钢材的体积是多少立方分米．
<gadget id="calculator">0.8 / 2</gadget>
<output>0.4</output>

<gadget id="calculator">6 * 10</gadget>
<output>60</output>

<gadget id="calculator">0.4 * 60</gadget>
<output>24</output>

<result>24</result>