Use a rectangular iron sheet with a length of 10dm and a width of 8dm to make a cuboid iron box with a height of 2dm without a cover. How can the volume of the cuboid be maximized? (Draw a schematic diagram) What is the largest volume in cubic decimeters?
用一张长10dm，宽8dm的长方形铁皮，做一个高2dm的无盖长方体铁皮箱，怎样做长方体的容积最大？(画出示意图)最大的容积是多少立方分米？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">10 - 4</gadget>
<output>6</output>

<gadget id="calculator">8 - 4</gadget>
<output>4</output>

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

<result>48</result>