A cuboid container, the bottom surface of which is a square with a side length of 6 decimeters, and the depth of water in the container is 4 decimeters, and a stone is placed in it, the stone is completely submerged in the water, and the water level rises by 1.5 decimeters, what is the volume of the stone?
一个长方体容器，底面是边长为6分米的正方形，容器中的水深4分米，放和一个石头，石头完全浸没在水中，水面上升1.5分米，这块石头的体积是多少？
<gadget id="calculator">6 * 6 * 1.5</gadget>
<output>54</output>

<result>54</result>