A professional chicken farmer raised 1,250 chickens this year, an increase of (1/4) compared to last year. How many chickens did you raise last year? How many.
一个养鸡专业户，今年养鸡1250只，比去年增加了(1/4)．去年养鸡多少只？多少．
<gadget id="calculator">1 / 4</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">1_250 / (5/4)</gadget>
<output>1_000</output>

<result>1_000</result>