PHS prepares to boil water and make tea to entertain guests. It takes him 1 minute to wash the kettle, 15 minutes to boil the water, 2 minutes to wash the tea cups, 1 minute to get the tea leaves, and 2 minutes to wash the teapot. How many minutes will it take at least to make the guests drink tea?
小灵通准备烧水沏茶招待客人，他洗水壶要用1分钟，烧开水要用15分钟，洗茶杯要用2分钟，拿茶叶要用1分钟，洗茶壶要用2分钟．试问最少要用几分钟能使客人喝上茶？
<gadget id="calculator">1 + 15</gadget>
<output>16</output>

<result>16</result>