A fuel tank on a car is 1.2 meters long, 0.4 meters wide, and 0.3 meters high. How many square meters of iron sheet should be used to make this fuel tank at least?
一种汽车上的油箱长1.2米，宽0.4米，高0.3米．做这个油箱至少要用铁皮多少平方米？
<gadget id="calculator">1.2 * 0.4</gadget>
<output>0.48</output>

<gadget id="calculator">1.2 * 0.3</gadget>
<output>0.36</output>

<gadget id="calculator">0.4 * 0.3</gadget>
<output>0.12</output>

<gadget id="calculator">0.48 + 0.36 + 0.12</gadget>
<output>0.96</output>

<gadget id="calculator">0.96 * 2</gadget>
<output>1.92</output>

<result>1.92</result>