Put a stone into a cube glass tank with a side length of 12cm filled with water. After the water overflows a little, take out the stone again. At this time, the height of the water surface is 7cm. What is the volume of the stone?
把一块石头放入一个装满水的棱长是12cm的正方体玻璃缸中，水溢出一些后，再把石头拿出来，此时水面高度是7cm，求石块的体积是多少？
<gadget id="calculator">12 - 7</gadget>
<output>5</output>

<gadget id="calculator">12 * 12 * 5</gadget>
<output>720</output>

<result>720</result>