A cube glass fish tank with a side length of 3dm, put a stone (the stone completely penetrates into the water), and the water level rises by 3cm, what is the volume of the stone?
一个正方体玻璃鱼缸，棱长为3dm，放入一块石头(石头完全侵入水中)，这时水面升高了3cm，这块石头的体积是多少？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">3 * 3 * (3/10)</gadget>
<output>27/10 = around 2.7</output>

<result>27/10 = around 2.7</result>