During the "October" Golden Week, Xinyijia Supermarket had 1,000 color TV sets for sale, and 160 sets remained unsold after 7 days. How many TVs are sold on average per day?
"十一"黄金周期间，新一佳超市有1000台彩电待售，7天后还剩下160台没有出售．平均每天售出彩电多少台．
<gadget id="calculator">1_000 - 160</gadget>
<output>840</output>

<gadget id="calculator">840 / 7</gadget>
<output>120</output>

<result>120</result>