The original price of a coat is 480 yuan, how much is the price after a 20% discount?
一件上衣原价480元，打八折后的价钱是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">480 * (4/5)</gadget>
<output>384</output>

<result>384</result>