The garment factory produces a batch of garments, and has already produced 80% of the plan. If it produces 200 more sets, it will be overfulfilled (1/5). How many sets of garments have actually been produced?
服装厂生产一批服装，已经生产了计划的80%，如果再生产200套，就超额完成了(1/5)，实际生产了多少套服装？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) + (1/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">200 / (2/5)</gadget>
<output>500</output>

<result>500</result>