In a glass tank with a length of 30 cm and a width of 12 cm, after a potato is completely submerged in water, the water level drops by 2 cm. What is the volume of the potato in cubic centimeters?
在一个长30厘米，宽12厘米的玻璃缸中，将一个完全浸没在水中的土豆拿出后，水面下降了2厘米，这个土豆的体积是多少立方厘米？
<gadget id="calculator">30 * 12 * 2</gadget>
<output>720</output>

<result>720</result>