The output value of a refrigerator factory last year was 72 million yuan, an increase of 20% compared with the output value of the previous year. How much was the output value of the previous year?
某冰箱厂去年的产值是7200万元，比前年的产值增长了两成，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">7_200 / (6/5)</gadget>
<output>6_000</output>

<result>6_000</result>