If a 6m long piece of wood is sawn into 3 small cylinders, the surface area increases by 72dm**2, what is the original volume of this piece of wood?
把一段6m长的木料锯成3段小圆柱，表面积增加了72dm**2，原来这根木料的体积是多少．
<gadget id="calculator">72 / 4</gadget>
<output>18</output>

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

<gadget id="calculator">18 * 60</gadget>
<output>1_080</output>

<result>1_080</result>