The forest farm planted 3,000 poplars this year, more than last year (1/5). How many poplars did the forest farm plant last year?
林场今年种杨树3000棵，比去年多种(1/5)．林场去年种杨树多少棵？
<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_000 / (6/5)</gadget>
<output>2_500</output>

<result>2_500</result>