Xiaohua's family used 38.5 tons of water in the first 5 months, and 63.5 tons in the next 7 months. How many tons of water is used per month on average throughout the year?
小华家前5个月用水38.5吨，后7个月用水63.5吨，全年平均每个月用水多少吨？
<gadget id="calculator">38.5 + 63.5</gadget>
<output>102</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">102 / 12</gadget>
<output>17/2 = around 8.5</output>

<result>17/2 = around 8.5</result>