When baking bread on a baking tray, bake the first side for 2 minutes and the second side for 1 minute, and only bake two slices at a time. Mom wants to bake 3 slices of bread, at least how many minutes.
在烤盘上烤面包时，第一面要烤2分钟，第二面要烤1分钟，且一次只能烤两片．妈妈要烤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>