All clothes in the store are discounted by 20%. Xiaohong bought a dress for 72 yuan. How much was the dress?
商店的衣服一律打八折，小红买了一条裙子花了72元，这条裙子原来多少钱？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">72 / (4/5)</gadget>
<output>90</output>

<result>90</result>