There is a cuboid gift box with a length of 2.8dm, a width of 0.9dm, and a height of 3.6dm. How many square decimeters of wrapping paper should be used to wrap this gift box?
有一个长方体礼盒，长2.8dm，宽0.9dm，高3.6dm，包装这个礼盒至少用多少平方分米的包装纸？
<gadget id="calculator">2.8 * 0.9</gadget>
<output>2.52</output>

<gadget id="calculator">2.8 * 3.6</gadget>
<output>10.08</output>

<gadget id="calculator">0.9 * 3.6</gadget>
<output>3.24</output>

<gadget id="calculator">2.52 + 10.08 + 3.24</gadget>
<output>15.84</output>

<gadget id="calculator">15.84 * 2</gadget>
<output>31.68</output>

<result>31.68</result>