The original price of a set of clothes is 100 yuan, after the price is increased by 10%, the price is reduced by 10%, what is the current price
一套服装原价100元，涨价10%以后，又削价10%，现在售价是多少
<gadget id="calculator">10 / 100</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>