The rice output in Fuyu Town reached 72,000 tons last year, an increase of 20% over the previous year. How many tons was the output in the previous year?
扶余镇去年水稻产量达到7.2万吨，比前年增产了二成，前年产量是多少万吨？
<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">7.2 / (6/5)</gadget>
<output>6</output>

<result>6</result>