Xiaohua uses a frying pan to cook pancakes. This pan can hold 2 large pancakes at the same time. It takes 4 minutes to fry one pancake (2 minutes for the front and back).
小华用平底锅煎饼，这只锅同时能放2个大饼，煎1个要4分钟(正反面各需2分钟)，小华煎5个饼最少需要多少分钟．
<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<result>10</result>