The price of chocolate candy is 30 yuan per kilogram. First increase the price by 10% and then reduce the price by 10%. What is the current price of chocolate candy?
巧克力糖每千克售价30元，先提价10%后再降价10%，巧克力糖现在的售价是多少元
<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">30 * (11/10) * (9/10)</gadget>
<output>297/10 = around 29.7</output>

<result>297/10 = around 29.7</result>