In country A, you can buy 1 chicken leg and 2 cups of cola with 30 yuan. The price in country B is 20% higher than that in country A. You can only buy 2 chicken legs and a cup of cola with 30 yuan. The price in country C is 20% higher than that in country B. How much does it cost to buy a chicken leg in China?
在A国30元钱可以买1个鸡腿和2杯可乐，B国的物价比A国高20%，30元只能买2个鸡腿和一杯可乐，C国物价比B国高20%，C国买1个鸡腿要多少元．
<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">8 * (6/5)</gadget>
<output>48/5 = around 9.6</output>

<result>48/5 = around 9.6</result>