Pour some water into a cuboid tank with a length of 20 cm, a width of 12 cm, and a height of 10 cm, and the measured water depth is 6 cm. After a stone is completely submerged in water, the water depth rises to 8 cm. Find the volume of the stone.
往一个长20cm，宽12cm、高10cm的长方体水槽中注入一些水，测得水深6cm．把一块石头完全浸入水中后，水深升至8cm．求石头的体积．
<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">20 * 12 * 2</gadget>
<output>480</output>

<result>480</result>