Xiaoxiang did good deeds for the widowed and lonely elderly Grandma Liu. It took him 3 minutes to sweep the floor, 8 minutes to clean the doors and windows, 10 minutes to boil the water, 5 minutes to arrange the tableware, and 2 minutes to arrange the tables and chairs. How many minutes will it take to finish these things in the most time-saving order
小翔为孤寡老人刘奶奶做好事，他扫地需3分钟，擦门窗需8分钟，烧开水需10分钟，整理餐具需5纠钟，排齐桌椅需2分钟．用最省时的顺序做完这些事，需要的时间是多少分钟
<gadget id="calculator">10 + 8</gadget>
<output>18</output>

<result>18</result>