A bicycle is sold for 168 yuan after a price reduction, which is 20% lower than the original price. How much is the original price?
一辆自行车降价后卖了168元，比原价降低了20%，原价是多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">168 / (4/5)</gadget>
<output>210</output>

<result>210</result>