There is a piece of wood with a length of 5 meters. After it is cut into two pieces, the surface area increases by 0.12 square meters. What is the original volume of this piece of wood?
有一根长5米的木料，横截成两段后，表面积增加了0.12平方米，这根木料原来的体积是多少？
<gadget id="calculator">0.12 / 2</gadget>
<output>0.06</output>

<gadget id="calculator">0.06 * 5</gadget>
<output>0.3</output>

<result>0.3</result>