During the eleventh period, "Huike Duo" supermarket has a big sale on clothing, with a 20% discount. The original price of a coat is 600 yuan. How much is it cheaper after the discount?
十一期间"惠客多"超市服装大促销，一律八折优惠，一件上衣原价600元，优惠后便宜了多少元？
<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">600 * (1/5)</gadget>
<output>120</output>

<result>120</result>