The original price of a shirt is 125 yuan, but now the price is reduced (1/5), how much is the current price?
一件衬衣原价125元，现在降价(1/5)，现在售价是多少元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">125 * (4/5)</gadget>
<output>100</output>

<result>100</result>