Use cubes with side lengths of 1 cm to form a cuboid with a length of 4 cm, a width of 3 cm, and a height of 2 cm. How many small cubes are needed.
用棱长是1cm的正方体，拼成一个长4cm、宽3cm、高2cm的长方体．需要多少块小正方体．
<gadget id="calculator">4 * 3 * 2</gadget>
<output>24</output>

<result>24</result>