Xinglong Home Appliances City carried out the activity of sending home appliances to the countryside. In November, 640 washing machines were sold, 10 less than twice the number of refrigerators sold. How many refrigerators were sold in November?
兴隆家电城开展家电下乡活动，十一月份销售洗衣机640台，比销售冰箱台数的2倍少10台，十一月份销售冰箱多少台？
<gadget id="calculator">640 + 10</gadget>
<output>650</output>

<gadget id="calculator">650 / 2</gadget>
<output>325</output>

<result>325</result>