Use a pan to pancake, only two pancakes can be fried at a time, both sides must be fried, each side takes 2 minutes. How long will it take at least 8 pancakes to cook now?
用一只平底锅煎饼，每次只能煎两张饼，两面都要煎，每面2分钟．现在要煎8张饼，至少需要多少分钟．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">2 * 2 * 4</gadget>
<output>16</output>

<result>16</result>