Nanfang Middle School saved 9.75 tons of water in the first half of November last year, and 4.95 tons in the second half of November. How many tons of water is saved on average per day?
南方中学去年11月份上半月节约用水9.75吨，下半月节约用水4.95吨，平均每天节约用水多少吨？
<gadget id="calculator">9.75 + 4.95</gadget>
<output>14.7</output>

<gadget id="calculator">14.7 / 30</gadget>
<output>0.49</output>

<result>0.49</result>