Use a 48 decimeter long iron wire to make a rectangular parallelepiped frame so that its height is 8 decimeters and the ratio of length to width is 1:1. Then paste paper on its sides and bottom to make a cuboid lantern. How many square decimeters of paper are needed at least?
用一根长48分米的铁丝做一个长方体的框架，使它的高为8分米，长、宽的比是1：1．再把它的侧面和底面糊上纸，做成一个长方体的灯笼，至少需要多少平方分米的纸？
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">2 * 8</gadget>
<output>16</output>

<gadget id="calculator">16 + 16</gadget>
<output>32</output>

<gadget id="calculator">32 * 2</gadget>
<output>64</output>

<gadget id="calculator">4 + 64</gadget>
<output>68</output>

<result>68</result>