The original price of a coat is 120 yuan, how much is the selling price after 20% off?
一件上衣的原价是120元，打八折后的售价是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">120 * (4/5)</gadget>
<output>96</output>

<result>96</result>