A cuboid container with a length of 12 decimeters, a width of 10 decimeters, and a water depth of 10.5 decimeters. A small iron block is immersed in the container. When the iron block is taken out of the water, the water level drops by 0.4 decimeters. The volume of the small iron block is How many cubic decimeters.
一个长方体容器，里面长12分米、宽10分米、水深10.5分米，容器中浸没着一个小铁块，当铁块从水中取出后，水面下降了0.4分米，这个小铁块的体积是多少立方分米．
<gadget id="calculator">12 * 10 * 0.4</gadget>
<output>48</output>

<result>48</result>