When toasting bread, the first side should be baked for 2 minutes, and the second side should be baked for 1 minute, that is, it takes 3 minutes to bake a piece of bread. Xiaoli uses a toast rack, and she can only put two slices of bread at a time. She eats three slices of bread every morning. How many minutes does it take at least.
烤面包时，第一面要烤2分钟，第二面要烤1分钟，即烤一片面包需要3分钟．小丽用烤面包架子，一次只能放两片面包，她每天早上吃3片面包，至少需要多少分钟．
<gadget id="calculator">2 + 1 + 1 + 1</gadget>
<output>5</output>

<result>5</result>