The price of a commodity this year is reduced by (1/4) compared to last year, and the price of last year is reduced by (1/4) compared to the previous year. This year's price is lower than that of the previous year ((())/(())).
一件商品，今年比去年降价(1/4)，去年比前年又降价(1/4)，今年售价比前年降低了((())/(()))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 * (3/4) * (3/4)</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">1 - (9/16)</gadget>
<output>7/16 = around 0.4375</output>

<gadget id="calculator">(7/16) / 1</gadget>
<output>7/16 = around 0.4375</output>

<result>7/16 = around 0.4375</result>