A piece of clothing is first sold at a reduced price (1/10), and after a period of time, the price is raised again (1/10). What percentage is the current price of the original price?
一件衣服先降价(1/10)销售，一段时间后，又提价(1/10)，现在的售价是最初定价的百分之几？
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>

<gadget id="calculator">1 * (9/10) * (11/10)</gadget>
<output>99/100 = around 0.99</output>

<result>99/100 = around 0.99</result>