A batch of clothes in the store could not be sold because the price was too high. The manager decided to sell them at a 20% discount, but no one cared about them. In the end, the promotional price was discounted by 20%, and it was sold at a price of 512 yuan, and it was sold out immediately. How much is the initial price.
商店里一批服装因为定价太高卖不出去，经理决定打八折销售，但仍然无人问津．最后又对促销价打八折，以512元一件的价格出售，马上抢购一空．最初定价是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">512 / (4/5) / (4/5)</gadget>
<output>800</output>

<result>800</result>