The original price of a jacket is 10 yuan, and now it is sold at "20% off" the original price. What is the current price?
一件上衣原价10元，现在按原价打"八折"出售，现价是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">10 * (4/5)</gadget>
<output>8</output>

<result>8</result>