The production of a batch of children's clothing has completed 80% of the production task, and there are still 1,200 sets of children's clothing that have not been completed. How many sets of children's clothing are there in total?
生产一批童装已经完成生产任务的80%，还有1200套没完成，童装共多少套．
<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_200 / (1/5)</gadget>
<output>6_000</output>

<result>6_000</result>