A piece of cuboid wood is 1.2 meters long. If it is sawn shorter by 2 decimeters, its volume will be reduced by 40 cubic decimeters. Find the volume of the original piece of wood.
一段长方体木材，长1.2米，如果锯短2分米，它的体积就减少40立方分米．求原来这段木材的体积．
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">1.2 * 10</gadget>
<output>12</output>

<gadget id="calculator">20 * 12</gadget>
<output>240</output>

<result>240</result>