Pour 3840 ml of water into a cuboid tank whose length is 20 cm, width is 16 cm, and height is 18 cm, and then a stone is completely immersed in the water. At this time, the water level rises by 4 cm. What is the volume of the stone? ?
在一个长是20厘米，宽是16厘米，高是18厘米的长方体水槽中注入3840毫升的水，然后把一个石块全部浸入水中，这时水面上升了4厘米，这个石块的体积是多少？
<gadget id="calculator">20 * 16 * 4</gadget>
<output>1_280</output>

<result>1_280</result>