The price of a computer is 3,000 yuan, the price is first reduced by 10%, and then the price is reduced by 10%, how much is the total price reduction.
一台电脑售价3000元，先降价10%，再降价10%，一共降价多少元．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

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

<gadget id="calculator">3_000 * (9/10) * (9/10)</gadget>
<output>2_430</output>

<gadget id="calculator">3_000 - 2_430</gadget>
<output>570</output>

<result>570</result>