After dividing a 3-meter-long cuboid wood into 3 sections, the surface area increases by 18 square decimeters. What is the original volume of this wood in cubic meters?
把一根长3米的长方体木料据成3段后，表面积增加18平方分米，这根木料原来的体积是多少立方米？
<gadget id="calculator">18 / 4 / 100</gadget>
<output>9/200 = around 0.045</output>

<gadget id="calculator">(9/200) * 3</gadget>
<output>27/200 = around 0.135</output>

<result>27/200 = around 0.135</result>