A cuboid with a base area of 300 square centimeters and a height of 10 centimeters contains water 5 centimeters deep. A stone is submerged in water so that the water level rises to 8 cm. What is the volume of this stone in cubic centimeters?
有一个底面积是300平方厘米，高10厘米的长方体，里面盛有5厘米深的水．把一块石头浸没到水里，水面上升到8厘米．这块石头的体积是多少立方厘米？
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">300 * 3</gadget>
<output>900</output>

<result>900</result>