Only two slices of bread can be placed in a pan at a time, and it takes 2 minutes to bake each side. Xiaohong wants to eat 3 slices of bread early, how many minutes will she have to wait at least.
一个锅每次只能放两片面包，每烤一面需2分钟．小红早点要吃3片面包，至少要等多少分钟．
<gadget id="calculator">2 + 2 + 2</gadget>
<output>6</output>

<result>6</result>