The TV factory plans to produce 500 TV sets per month, but the output in 10 months after the technological transformation is 450 more than the annual planned output. How many sets are actually produced per month on average?
电视机厂计划每月生产电视机500台，技术改造后10个月的产量就比全年计划产量多450台，实际平均每月生产多少台？
<gadget id="calculator">500 * 12</gadget>
<output>6_000</output>

<gadget id="calculator">6_000 + 450</gadget>
<output>6_450</output>

<gadget id="calculator">6_450 / 10</gadget>
<output>645</output>

<result>645</result>