On Mother's Day, I bought a box of chocolates for my mother with my lucky money. The length, width, and height of this box of chocolates are 12 cm, 8 cm, and 3 cm respectively. I asked the salesperson to put a beautiful package on this box of chocolates. Excuse me. What is the minimum size of wrapping paper? Then tie the ribbon, the knot is 15 cm, at least how long is the ribbon?
母亲节时，明明用自己的压岁钱为妈妈买了盒巧克力，这盒巧克力的长、宽、高分别为12厘米、8厘米、3厘米，明明请售货员阿姨为这盒巧克力打上精美的包装，请问至少需要多大面积的包装纸？再扎上彩带，结头处是15厘米，至少需要多长的彩带？
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

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

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

<gadget id="calculator">24 + 16 + 12 + 15</gadget>
<output>67</output>

<result>67</result>