A cuboid metal water tank without a cover is 8 decimeters long, 6 decimeters wide, and 5 decimeters high. How many square decimeters of iron sheet is needed to make such a water tank? (interface not counted)
一个无盖的长方体铁皮水箱，长8分米，宽6分米，高5分米．做一个这样的水箱至少要铁皮多少平方分米？(接口处不计)
<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<gadget id="calculator">8 * 5 * 2</gadget>
<output>80</output>

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

<gadget id="calculator">48 + 80 + 60</gadget>
<output>188</output>

<result>188</result>