A cuboid wooden box is 6 decimeters long, 4 decimeters wide, and 3 decimeters high. We can only see three sides of it at most. If we want to wrap these three sides with wrapping paper for the sake of beauty, then we need to buy at least how many square decimeters of wrapping paper.
一个长方体木箱长6分米、宽4分米、高3分米．我们最多只能看到它的三个面，为了美观要把这三个面用包装纸包好，那么至少需要购买多少平方分米的包装纸．
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">24 + 18 + 12</gadget>
<output>54</output>

<result>54</result>