Uncle Zhang is making pancakes. The pan he uses can only bake two cakes at a time, and both sides must be baked. If each side is baked for 2 minutes; how many minutes will it take to bake three cakes at least?
张大叔在烙饼，他用的锅每次只能烙两张饼，两面都要烙，如果每烙一面2分钟；3张饼至少用多少分钟烙完．
<gadget id="calculator">2 + 2 + 2</gadget>
<output>6</output>

<result>6</result>