To make a cuboid fish tank (without cover), 6 decimeters in length, 5 decimeters in width, and 4 decimeters in height, how many square decimeters of glass do you need at least?
做一个长方体的鱼缸(无盖)，长6分米，宽5分米，高4分米，至少需要多少平方分米的玻璃？
<gadget id="calculator">6 * 5</gadget>
<output>30</output>

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

<gadget id="calculator">5 * 4 * 2</gadget>
<output>40</output>

<gadget id="calculator">30 + 48 + 40</gadget>
<output>118</output>

<result>118</result>