The price of a computer is reduced by 10% for the first time in the sales process, and 20% for the second time, and the current price is 3456 yuan. How much is the original price of this computer?
一款电脑在销售过程中第一次降价10%，第二次又降价20%，现在标价3456元．这款电脑原价多少元？
<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">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(9/10) * (4/5)</gadget>
<output>18/25 = around 0.72</output>

<gadget id="calculator">3_456 / (18/25)</gadget>
<output>4_800</output>

<result>4_800</result>