After the price of a handicraft is increased by 10% from 10 yuan, and then the price is reduced by 10%, what is the price of this handicraft?
一件工艺品的价格由10元增加10%后，又降价10%，结果这件工艺品的是多少元
<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">10 * (11/10) * (9/10)</gadget>
<output>99/10 = around 9.9</output>

<result>99/10 = around 9.9</result>