A 6-meter-long log is cut into 4 sections on average, and each section occupies ((())/(())) of the log. If it is cut into 4 sections, the surface area increases by 18dm**2. It turns out that this What is the volume of the log.
一根长6米的圆木平均截成4段，每段占这根圆木的((())/(()))，若截成4段后表面积增加了18dm**2，原来这根圆木的体积是多少．
<gadget id="calculator">18 / 6</gadget>
<output>3</output>

<gadget id="calculator">3 * 6 * 10</gadget>
<output>180</output>

<result>180</result>