It takes 2 minutes for Xiaohong to wash the pot, 20 minutes to boil water, 2 minutes to wash the teacup, 15 minutes to buy tea leaves, 3 minutes to make tea, and at least (how many) minutes for Xiaohong to make tea well.
小红沏茶要经过洗壶要2分钟，烧水20分钟，洗茶杯2分钟，买茶叶15分钟，沏茶需要3分钟，把茶沏好小红最少需(多少)分钟．
<gadget id="calculator">2 + 20 + 3</gadget>
<output>25</output>

<result>25</result>