A refrigerator factory plans to produce 3600 refrigerators this year, which is 1/5 more than last year's output. How many refrigerators were produced last year?
一个电冰箱厂计划今年生产3600台电冰箱，比去年的产量多(1/5)，去年生产了多少台？
<gadget id="calculator">1 / 5</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>