A cuboid fish tank with a length of 80 cm, a width of 60 cm, and a height of 30 cm is filled with some water. There is an ornamental stone submerged in the water. If the stone is pulled out, the water level will drop by 2 cm. Find the volume of the ornamental stone.
一个长80cm，宽60cm，高30cm的长方体鱼缸，里面装一些水．有一块观赏石沉没水中，如果将石捞出，水面下降2cm，求观赏石的体积．
<gadget id="calculator">80 * 60 * 2</gadget>
<output>9_600</output>

<result>9_600</result>