Xiaojun and Liu Yu shared 180 tons of water in the first six months of last year. How many tons of water does each household use on average per month? (Column comprehensive formula solution)
小军和刘玉两家去年前6个月一共用水180吨，每户人家平均每个月用水多少吨？(列综合算式解答)
<gadget id="calculator">180 / 6 / 2</gadget>
<output>15</output>

<result>15</result>