There is a small goldfish tank with a length of 4 decimeters, a width of 3 decimeters, and a water depth of 2 decimeters. After a small rock is immersed in the water, the water level rises by 0.8 decimeters. What is the volume of this rock in cubic decimeters?
有一个小金鱼缸，长4分米、宽3分米，水深2分米，把一小块假山石浸入水中后，水面上升了0.8分米，这块假山石的体积是多少立方分米．
<gadget id="calculator">4 * 3 * 0.8</gadget>
<output>9.6</output>

<result>9.6</result>