A cuboid glass fish tank measures 4dm in length, 3dm in width, and 2dm in depth. After a small rock is immersed in the water, the water level rises by 8cm. What is the volume of the rock in cubic decimeters?
一个长方体玻璃鱼缸，从里面量长4dm，宽3dm，水深2dm，把一小块假山石浸入水中后，水面上升了8cm，这块假山石的体积是多少立方分米？
<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">4 * 3 * (4/5)</gadget>
<output>48/5 = around 9.6</output>

<result>48/5 = around 9.6</result>