A cuboid container has a length of 3 decimeters and a width of 20 cm. Fill the container with water at a height of 8 cm, and then put a stone into the water. At this time, the water depth in the container is measured to be 10 cm. What is the volume of the stone?
一个长方体容器的长为3分米，宽为20厘米，向容器内注入8厘米高的水，再把一块石头放入水中，这时量得容器内水深为10厘米，石头的体积是多少？
<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<gadget id="calculator">30 * 20 * 2</gadget>
<output>1_200</output>

<result>1_200</result>