There is a cuboid fish tank, 9 decimeters long, 6 decimeters wide, and 6 decimeters high. There is an appropriate amount of water in it, put a piece of coral stone (completely submerged, and the water does not overflow), the water level rises by 5 cm. What is the volume of this coral stone?
有一个长方体鱼缸，长9分米，宽6分米，高6分米．内有适量的水，放入一块珊瑚石(完全浸没，而水没有溢出)，水面升高了5厘米．这块珊瑚石的体积是多少？
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">9 * 6 * (1/2)</gadget>
<output>27</output>

<result>27</result>