Use cuboid wooden blocks with a length of 20 cm, a width of 15 cm, and a height of 6 cm to form a cube. At least how many such blocks are needed.
用长20厘米，宽15厘米，高6厘米的长方体木块，堆成一个正方体，至少需要多少块这样的木块．
<gadget id="calculator">5 * 2 * 3 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 / 20</gadget>
<output>3</output>

<gadget id="calculator">60 / 15</gadget>
<output>4</output>

<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<gadget id="calculator">3 * 4 * 10</gadget>
<output>120</output>

<result>120</result>