A cuboid wooden box with a cover has a volume of 0.0285 cubic meters, its length is 5 decimeters, and its width is 3.8 decimeters. How many square meters is the minimum plank used to make such a wooden box?
一个带盖的长方体木箱，体积是0.0285立方米，它的长是5分米，宽是3.8分米．做这样的一个木箱至少要用木板多少平方米？
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3.8 / 10</gadget>
<output>0.38</output>

<gadget id="calculator">(1/2) * 0.38</gadget>
<output>0.19</output>

<gadget id="calculator">0.0285 / 0.19</gadget>
<output>0.15</output>

<gadget id="calculator">(1/2) * 0.15</gadget>
<output>0.075</output>

<gadget id="calculator">0.38 * 0.15</gadget>
<output>0.057</output>

<gadget id="calculator">0.19 + 0.075 + 0.057</gadget>
<output>0.322</output>

<gadget id="calculator">0.322 * 2</gadget>
<output>0.644</output>

<result>0.644</result>