1 Use a pan to make pancakes, only two pancakes can be fried at a time, and both sides must be fried for 2 minutes on each side. How long will it take at least 7 pancakes to fry now?
1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7张饼，至少要多少分钟．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">8 + 6</gadget>
<output>14</output>

<result>14</result>