A garment factory produced 3,600 sets of sportswear in May, and the production in May was 20% more than that in April. How many sets of sportswear were produced in April?
某服装厂五月份生产运动服3600套，五月份比四月份多生产20%，四月份生产运动服多少套？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">3_600 / (6/5)</gadget>
<output>3_000</output>

<result>3_000</result>