A cuboid shoe box is 12 cm long, 5 cm wide, and 3 cm high. How many square centimeters of cardboard do you need to make such a shoe box?
一个长方体鞋盒，长12厘米，宽5厘米，高3厘米，做这样的一个鞋盒至少需要多少平方厘米的纸板？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">12 * 3</gadget>
<output>36</output>

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

<gadget id="calculator">60 + 36 + 15</gadget>
<output>111</output>

<gadget id="calculator">111 * 2</gadget>
<output>222</output>

<result>222</result>