A pair of trousers costs 100 yuan, and the price of a jacket is 20% more than that of trousers. How much is a coat?
一件裤子100元，一件上衣的价格比裤子多20%．一件上衣多少元？
<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">100 * (6/5)</gadget>
<output>120</output>

<result>120</result>