A piece of wood with a length of 3 meters is sawn into two pieces, and the surface area increases by 12.56 square decimeters. What is the original volume of the wood in cubic decimeters?
一根长3米的木料，锯成两段后，表面积增加了12.56平方分米，则这根木料原来的体积为多少立方分米．
<gadget id="calculator">12.56 / 2</gadget>
<output>6.28</output>

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">6.28 * 1 * 3 * 10</gadget>
<output>188.4</output>

<result>188.4</result>