Uncle Li harvested 250 kilograms of rapeseeds last year, an increase of 25% compared to the previous year. How many kilograms of rapeseeds were harvested in the previous year?
李叔叔去年收油菜籽250千克，比前年增收25%，前年收油菜籽多少千克？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">250 / (5/4)</gadget>
<output>200</output>

<result>200</result>