Use glass to make a rectangular parallelepiped sink with a length of 12 decimeters, a width of 5 decimeters, and a height of 6 decimeters. How many square decimeters of glass is needed at least?
用玻璃做一个无盖的长方体水槽，长12分米，宽5分米，高6分米，至少需要多少平方分米的玻璃？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">12 * 6 * 2</gadget>
<output>144</output>

<gadget id="calculator">5 * 6 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 + 144 + 60</gadget>
<output>264</output>

<result>264</result>