The total output value of Wangzhuang last year was 240,000 yuan, an increase of 20% over the previous year. How much was the output value of the previous year?
王庄去年总产值为24万元，比前年增加了20%，前年的产值是多少万元？
<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">24 / (6/5)</gadget>
<output>20</output>

<result>20</result>