To make a cuboid fish tank with a length of 6dm, a width of 3dm, and a height of 4dm, at least how many square decimeters of glass are needed?
做一个长6dm，宽3dm，高4dm的长方体无盖鱼缸，至少需要多少平方分米的玻璃？
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">6 * 4 * 2</gadget>
<output>48</output>

<gadget id="calculator">3 * 4 * 2</gadget>
<output>24</output>

<gadget id="calculator">18 + 48 + 24</gadget>
<output>90</output>

<result>90</result>