After a 6-meter-long cylindrical wood is cut into two sections, the surface area increases by 25.12 square decimeters. What is the original volume of this wood?
把一根长6米的圆柱形木料横截成两段后表面积增加了25.12平方分米，这根木料原来体积是多少？
<gadget id="calculator">25.12 / 2</gadget>
<output>12.56</output>

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

<gadget id="calculator">12.56 * 60</gadget>
<output>753.6</output>

<result>753.6</result>