The original price of a coat is 560 yuan, and a promotion is held to celebrate New Year's Day. The sale is at 80% of the original price. What is the promotional price of this coat?
一件上衣原价560元，迎元旦搞促销，按原价的80%销售，这件上衣的促销价是多少．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">560 * (4/5)</gadget>
<output>448</output>

<result>448</result>