Suguo Supermarket "May 1st Golden Week" special offer, "Wang Zhongwang" brand ham sausages originally priced at 0.80 yuan each, and are now on sale at a 20% discount, what is the current price.
苏果超市"五一黄金周"特价酬宾，"王中王"牌火腿肠每根原价0.80元，现打8折出售，则现价为多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">0.8 * (4/5)</gadget>
<output>0.64</output>

<result>0.64</result>