Uncle Wang needs to make two cuboid metal buckets with length, width and height of 3.6dm, 25cm and 0.4m respectively. How many square decimeters of metal are needed?
王叔叔要做2个长、宽、高分别是3.6dm、25cm、0.4m的无盖长方体铁皮水桶，需要用铁皮多少平方分米？
<gadget id="calculator">25 / 10</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">3.6 * (5/2)</gadget>
<output>9</output>

<gadget id="calculator">3.6 * 0.4 * 10</gadget>
<output>14.4</output>

<gadget id="calculator">(5/2) * 0.4 * 10</gadget>
<output>10</output>

<gadget id="calculator">14.4 + 10</gadget>
<output>24.4</output>

<gadget id="calculator">24.4 * 2</gadget>
<output>48.8</output>

<gadget id="calculator">9 + 48.8</gadget>
<output>57.8</output>

<gadget id="calculator">57.8 * 2</gadget>
<output>115.6</output>

<result>115.6</result>