A shopping mall brought in a batch of color TV sets, sold 390 sets in August, sold 450 sets in September, and left 120 sets. How many color TVs are there in total?
某商场运进一批彩电，八月份卖出390台，九月份卖出450台，还剩120台．这批彩电共有多少台？
<gadget id="calculator">390 + 450 + 120</gadget>
<output>960</output>

<result>960</result>