In 2005, buying a ticket from Hohhot to Beijing cost 204 yuan, an increase of 20% from the original price. What was the original price?
2005年，买一张从呼和浩特到北京的车票是204元，比原价增加了20%，原价是多少？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">204 / (6/5)</gadget>
<output>170</output>

<result>170</result>