A football is 35 yuan, a basketball is 20% more expensive than a football, how much is a basketball.
一个足球35元，一个篮球比一个足球贵20%，一个篮球多少元．
<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">35 * (6/5)</gadget>
<output>42</output>

<result>42</result>