A wooden box (without a cover) for selling rice in a grain store is 1.2 meters long, 0.5 meters wide, and 0.8 meters high. How many square meters of wooden boards should be used to make such a wooden box?
粮店售米用的木箱(无盖)，长1.2米，宽0.5米，高0.8米，制作这样一个木箱至少要用木板多少平方米？
<gadget id="calculator">1.2 * 0.5</gadget>
<output>0.6</output>

<gadget id="calculator">1.2 * 0.8</gadget>
<output>0.96</output>

<gadget id="calculator">0.8 * 0.5</gadget>
<output>0.4</output>

<gadget id="calculator">0.96 + 0.4</gadget>
<output>1.36</output>

<gadget id="calculator">1.36 * 2</gadget>
<output>2.72</output>

<gadget id="calculator">0.6 + 2.72</gadget>
<output>3.32</output>

<result>3.32</result>