cuboid tank with a length of 60 cm, a width of 3 decimeters, and a height of 5 decimeters is filled with 54 liters of water and an irregular stone is placed. The water level rises to 4.5 decimeters. Find the volume of the stone.
一个长60厘米，宽3分米，高5分米的长方体水槽，倒入54升水后，放了一块不规则的石头后，水面上升到4.5分米，求这块石头的体积．
<gadget id="calculator">60 / 10</gadget>
<output>6</output>

<gadget id="calculator">6 * 3 * 4.5</gadget>
<output>81</output>

<gadget id="calculator">81 - 54</gadget>
<output>27</output>

<result>27</result>