A shopping mall sells discounts. It is stipulated that the purchase of goods below 200 yuan (including 200 yuan) will not be discounted, and all purchases of 200 yuan or more and 500 yuan (including 500 yuan) will be 10% off. 500 yuan) get 10% off, and more than 20% off, one person bought twice, and spent 134 yuan and 466 yuan respectively, so how much yuan can he save if he buys these commodities at once?
一个商场打折销售，规定购买200元以下(包括200元)商品不打折，200元以上500元以下(包括500元)全部打九折，如购买500元以上的商品，就把500元以内(包括500元)的打九折，超出的打八折，一个人买了两次，分别用了134元、466元，那么如果他一次购买这些商品的话，可节省多少元？
<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">134 * (1/5)</gadget>
<output>134/5 = around 26.8</output>

<result>134/5 = around 26.8</result>