Ding Ding's family is going to make an uncovered glass fish tank with a length of 5 decimeters, a width of 4 decimeters, and a height of 6 decimeters. How many square decimeters of glass should Ding Ding prepare at least?
丁丁家要做一个长5分米，宽4分米，高6分米的无盖玻璃鱼缸．丁丁最少要准备多少平方分米玻璃？
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<gadget id="calculator">30 + 24</gadget>
<output>54</output>

<gadget id="calculator">54 * 2</gadget>
<output>108</output>

<gadget id="calculator">20 + 108</gadget>
<output>128</output>

<result>128</result>