The original price of a piece of clothing is 100 yuan, the price is raised first (1/10), and after a while, the price is reduced again (1/10), what is the current price?
一件衣服原价100元，先提价(1/10)，过段时间以后，又降价(1/10)，那么现在价格是多少元．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

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

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

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

<result>99</result>