After selling a bicycle with a 20% discount, it is 160 yuan cheaper than the original price. How much is the original price of this bicycle? What is the correct column
一辆自行车打八折出售后比原价便宜了160元．这辆自行车原价多少元？正确的列式是多少
<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">160 / (1/5)</gadget>
<output>800</output>

<result>800</result>