A color TV, the price has been raised by 10% twice in a row, the current price is equal to the original price.
一种彩电，连续两次提价10%，现价相当于原价的多少．
<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">(11/10) * (11/10)</gadget>
<output>121/100 = around 1.21</output>

<result>121/100 = around 1.21</result>