An electric baking pan can only cook 2 pancakes at a time, and fry both sides for 2 minutes on each side. How long does it take at least to cook 3 pancakes?
一个电饼铛，每次只能煎2个煎饼，两面都煎，每面2分钟，煎3个煎饼至少需多少分钟．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>