Xiao Wang's family paid electricity bills of 360 yuan in the first half of last year and 276 yuan in the second half of the year. Last year, his family paid an average electricity bill (how many) yuan per month.
小王家去年上半年交电费360元，下半年交电费276元．他家去年平均每月交电费(多少)元．
<gadget id="calculator">360 + 276</gadget>
<output>636</output>

<gadget id="calculator">636 / 12</gadget>
<output>53</output>

<result>53</result>