A product is sold for 160 yuan after a 20% price reduction, and how much is it sold for after a 20% price reduction.
一件商品降价20%后卖160元，又降价20%后卖多少元钱．
<gadget id="calculator">20 / 100</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">160 * (4/5)</gadget>
<output>128</output>

<result>128</result>