A car factory planned to produce 12,600 cars last year. As a result, the annual plan was completed in the first half of the year (5/9), and in the second half of the year (3/5). How many cars are overproduced in a year?
某汽车厂去年计划生产汽车12600辆，结果上半年完成了全年计划的(5/9)，下半年完成全年计划的(3/5)．全年超产汽车多少辆？
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(5/9) + (3/5)</gadget>
<output>52/45 = around 1.155556</output>

<gadget id="calculator">12_600 * (52/45)</gadget>
<output>14_560</output>

<gadget id="calculator">14_560 - 12_600</gadget>
<output>1_960</output>

<result>1_960</result>