A piece of clothing is priced at 280 yuan, and the merchant can earn 80 yuan by selling it at a 20% discount. How much is the actual purchase price of this piece of clothing?
一件衣服售价280元，现打八折销售商家还能赚80元，这件衣服实际进价是多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">280 * (4/5)</gadget>
<output>224</output>

<gadget id="calculator">224 - 80</gadget>
<output>144</output>

<result>144</result>