An electric fan, the original price is 125 yuan, the current price is 100 yuan, the price is reduced ((())/(())).
一种电风扇，原价125元，现价100元，降价((())/(()))．
<gadget id="calculator">125 - 100</gadget>
<output>25</output>

<gadget id="calculator">25 / 125</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>