In order to maintain the needs of the human body, in addition to the normal diet, a person should drink 1.2 kg of water per day, and a bucket of mineral water weighs 18 kg. There are three members of Xiaoming's family. The whole family is required to drink 1.2 kilograms of mineral water per day. How many days is enough for Xiaoming's family to drink a bucket of mineral water?
为了维持人体的需要，除了正常饮食外，一个人每天应饮水1.2千克，一桶矿泉水重18千克．小明家有三口人，全家人按要求每人每天喝矿泉水1.2千克，一桶矿水泉水够小明家喝几天？
<gadget id="calculator">1.2 * 3</gadget>
<output>3.6</output>

<gadget id="calculator">18 / 3.6</gadget>
<output>5</output>

<result>5</result>