Last year's cotton output in Li Village increased by 20% compared with the previous year. Last year's cotton output was 267.6 tons. How many tons was the cotton output in the previous year?
李村去年的棉花产量比前年增加两成，去年的棉花产量是267.6吨，前年的棉花产量是多少吨？
<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">267.6 / (6/5)</gadget>
<output>223</output>

<result>223</result>