In labor class, students learn pancakes. Both sides of the pancake need to be fried. It takes 5 minutes to fry one side, and a maximum of 2 pancakes can be put in the pan at a time. How many minutes does it take to fry 6 pancakes?
劳动课，同学们学煎饼，饼的两面都要煎，煎一面需要5分钟，锅里一次最多放2个饼．煎6个饼，至少需要多少分钟．
<gadget id="calculator">5 * 2</gadget>
<output>10</output>

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

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<result>30</result>