rice experimental field harvested 750 kilograms of wheat this year, an increase of 20% over last year. How many kilograms of wheat were harvested last year?
一块水稻试验田今年收小麦750千克，比去年增产两成，去年收小麦多少千克？
<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">750 / (6/5)</gadget>
<output>625</output>

<result>625</result>