You can only put 2 pancakes in a pan at a time. It takes 2 minutes to fry one pancake, one minute to fry the front and back sides, and at least how many minutes to fry 5 pancakes.
用平底锅煎饼，每次只能放2张，煎一张要2分钟，正反面个要一分钟，煎5张饼至少要多少分钟分钟．
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<result>5</result>