cuboid water tank has a length of 10dm, a width of 8dm, and a water depth of 4.5dm. When a stone is put into the water tank, the water level rises to 60cm. What is the volume of this rock?
一个长方体水箱，长10dm，宽8dm，水深4.5dm，当把一块石块放入水箱后，水位上升到60cm．这块石块的体积是多少？
<gadget id="calculator">60 / 10</gadget>
<output>6</output>

<gadget id="calculator">6 - 4.5</gadget>
<output>1.5</output>

<gadget id="calculator">10 * 8 * 1.5</gadget>
<output>120</output>

<result>120</result>