There are 4 pieces of soap in the shape of a cuboid whose length is 10 cm, width 6 cm, and height 3 cm. If you put these 4 pieces of soap in a packing box, please design a packing box reasonably. What is the minimum square centimeter of material used in this packing box?
有4块形状是长方体的肥皂，量得它的长是10厘米，宽6厘米，高3厘米．如果把这4块肥皂放在一个包装盒里，请你合理设计一种包装盒，这种包装盒所用材料最少是多少平方厘米？
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<gadget id="calculator">12 * 6</gadget>
<output>72</output>

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

<gadget id="calculator">120 + 72 + 60</gadget>
<output>252</output>

<gadget id="calculator">252 * 2</gadget>
<output>504</output>

<result>504</result>