Xiaoying's family harvested 6,000kg of rice this year, an increase of 20% compared to last year. How many kilograms of rice did Xiaoying's family harvest last year?
小英家今年收稻谷6000kg，比去年增产20%，小英家去年收稻谷多少千克？
<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">6_000 / (6/5)</gadget>
<output>5_000</output>

<result>5_000</result>