A garment factory planned to process 28,000 sets of garments in October, but it completed the plan in the first half of the month (3/5), and the second half of the month (4/7). How many sets of garments were processed this month more than the original plan?
某服装厂10月份计划加工服装28000套，结果上半月完成计划的(3/5)，下半月完成计划的(4/7)，这个月比原计划多加工服装多少套？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">28_000 * (3/5)</gadget>
<output>16_800</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">28_000 * (4/7)</gadget>
<output>16_000</output>

<gadget id="calculator">16_000 - 28_000</gadget>
<output>-12_000</output>

<gadget id="calculator">16_800 + (-12_000)</gadget>
<output>4_800</output>

<result>4_800</result>