How many small cubes with side lengths of 1 cm can be put together to form a cuboid with a length of 6 cm, a width of 5 cm, and a height of 4 cm.
由多少个棱长是1cm的小正方体，可以拼成一个长6cm，宽5cm，高4cm的长方体．
<gadget id="calculator">1 * 1 * 1</gadget>
<output>1</output>

<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">6 * 5 * 4</gadget>
<output>120</output>

<result>120</result>