What Qingqing’s mother has to do in the morning: boil water for 10 minutes, boil milk for 5 minutes, buy breakfast for 8 minutes, stack the quilt for 2 minutes, wipe the table for 2 minutes, and rinse with boiling water for 1 minute. There is only one gas fire in the house, how many minutes will it take to finish these things.
青青妈妈早上要做的事情：烧开水10分钟，煮牛奶5分钟，买早点8分钟，叠被2分钟，擦桌2分钟，冲开水1分钟．家里只有一个煤气火，做完这些事情至少需要多少分钟．
<gadget id="calculator">10 + 5</gadget>
<output>15</output>

<result>15</result>