New Mart supermarket clothing "20% off" sales. The original price of a coat is 380 yuan. How much can you save by buying this coat?
新玛特超市服装"八折"销售．一件上衣原价380元，买这件上衣，可省多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">380 * (1/5)</gadget>
<output>76</output>

<result>76</result>