Wonderful Fairy has to do the following things in the morning: It takes 10 minutes to boil a pot of water, 2 minutes to pour water into a thermos, 5 minutes to clean the floor, and 4 minutes to tidy up the cabinets.
奇妙仙子早晨要完成这样几件事：烧一壶水需要10分钟，把水灌进热水瓶需要2分钟，打扫地板需要5分钟，整理橱柜需要4分钟，做好这些事，最少需要多少分钟．
<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<result>12</result>