In a cuboid tank with a length of 25 cm and a width of 20 cm, there is water 10 cm deep. Immerse a landscape stone into the bottom of the water tank, the landscape stone is completely submerged in water, and the water level rises to 15 cm. What is the volume of this rock in cubic centimeters?
在一个长25厘米，宽20厘米的长方体水箱里，有深10厘米的水．往水箱底浸入一块景石，景石完全被水淹没，水位上升到15厘米．这块景石的体积是多少立方厘米．
<gadget id="calculator">15 - 10</gadget>
<output>5</output>

<gadget id="calculator">25 * 20 * 5</gadget>
<output>2_500</output>

<result>2_500</result>