A certain factory plans to produce 3,780 color TV sets this year, but the annual plan has been completed in 9 months. According to this calculation, how many units actually exceed the plan for the whole year.
某厂计划今年生产彩电3780台，实际9个月已完成了全年计划，照这样计算，实际全年超过计划多少台．
<gadget id="calculator">3_780 / 9</gadget>
<output>420</output>

<gadget id="calculator">12 - 9</gadget>
<output>3</output>

<gadget id="calculator">420 * 3</gadget>
<output>1_260</output>

<result>1_260</result>