The price of a piece of clothing is 120 yuan, and the profit is 20%. If it is sold at 90% of the price, how much money can it earn?
一件衣服的标价是120元，赚了百分之二十，如果按标价的百分之九十卖出，能赚多少元．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">120 * (9/10)</gadget>
<output>108</output>

<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">120 / (6/5)</gadget>
<output>100</output>

<gadget id="calculator">108 - 100</gadget>
<output>8</output>

<result>8</result>