The rice output of Uncle Wang’s family was 2,600 kilograms the year before last, which was 20% more than the previous year. How many kilograms was the rice output last year?
王大爷家前年水稻产量为2600千克，去年比前年增产二成，去年水稻产量是多少千克？
<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">2_600 * (6/5)</gadget>
<output>3_120</output>

<result>3_120</result>