A pan can hold 2 cakes at a time, a cake has two sides, it takes 2 minutes to cook one side, how many minutes does it take to fry 3 cakes.
一只平底锅每次可以放2张饼，一张饼有两面，煎熟一面要2分钟，煎3张饼要多少分钟．
<gadget id="calculator">2 + 2 + 2</gadget>
<output>6</output>

<result>6</result>