A cuboid container has a bottom of 20 cm long and 15 cm wide. After a stone is placed in it, the water level rises by 4 cm. What is the volume of the stone in cubic centimeters?
一个长方体容器，底面长是20厘米，宽是15厘米，放入一个石头后，水面升高了4厘米，这个石头的体积是多少立方厘米？
<gadget id="calculator">20 * 15 * 4</gadget>
<output>1_200</output>

<result>1_200</result>