A cuboid glass tank is 60 cm long and 40 cm wide when measured from the inside, and the water depth in the tank is 10 cm. If a stone is immersed in water and the water level rises to 12 cm, what is the volume of the stone?
一个长方体玻璃缸，从里面量长60厘米，宽40厘米，缸内水深10厘米．把一块石头浸入水中后，水面升到12厘米，求石块的体积是多少？
<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<gadget id="calculator">60 * 40 * 2</gadget>
<output>4_800</output>

<result>4_800</result>