The water pipes used for flowing water on the outer wall of the building are cuboids. If each section is 3 meters long and the cross section is a rectangle with a length of 1 decimeter and a width of 0.6 decimeters, how many square decimeters of iron sheet should be used to make a section of water pipe?
楼房外壁用于流水的水管是长方体，如果每节长3米，横截面是一个长方形，长1分米，宽0.6分米，那么做一节水管，至少要用铁皮多少平方分米？
<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">1 * 30</gadget>
<output>30</output>

<gadget id="calculator">0.6 * 30</gadget>
<output>18</output>

<gadget id="calculator">30 + 18</gadget>
<output>48</output>

<gadget id="calculator">48 * 2</gadget>
<output>96</output>

<result>96</result>