A cuboid iron box is 18 cm long, 15 cm wide, and 12 cm high. How many square decimeters of iron sheet should be used to make this iron box?
一个长方体铁盒长18厘米，宽15厘米，高12厘米，做成这个铁盒至少用多少平方分米的铁皮？
<gadget id="calculator">18 * 15 * 2</gadget>
<output>540</output>

<gadget id="calculator">18 * 12 * 2</gadget>
<output>432</output>

<gadget id="calculator">15 * 12 * 2</gadget>
<output>360</output>

<gadget id="calculator">540 + 432 + 360</gadget>
<output>1_332</output>

<gadget id="calculator">1_332 / 100</gadget>
<output>333/25 = around 13.32</output>

<result>333/25 = around 13.32</result>