A cuboid glass container, measured from the inside, is 12cm in length and width. Pour 5cm of water into the container, then put a potato into the water (completely submerged), and the water surface rises to 7cm. What is the volume of this potato?
一个长方体玻璃容器，从里面量长和宽均为12cm，向容器中倒入5cm深的水，再把一个土豆放入水中(完全浸没)，水面上升到7cm．这个土豆的体积是多少？
<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">12 * 12 * 2</gadget>
<output>288</output>

<result>288</result>