48 decimeter long iron wire is made into a rectangular parallelepiped frame with a length of 4 decimeters and a width of 3 decimeters, and the frame is pasted with paper to form a rectangular parallelepiped model, at least how many square decimeters of paper are needed.
一根长48分米的铁丝做成一个长4分米，宽3分米的长方体框架，用纸把框架糊成一个长方体模型，至少需要纸多少平方分米．
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">12 - 7</gadget>
<output>5</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">12 + 20 + 15</gadget>
<output>47</output>

<gadget id="calculator">47 * 2</gadget>
<output>94</output>

<result>94</result>