After the price of a certain color TV is reduced by 10%, each set is priced at 900 yuan. How much is the original price of this color TV?
某款彩色电视机降价10%后，每台售价为900元，这款彩色电视机原价为多少元？
<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">900 / (9/10)</gadget>
<output>1_000</output>

<result>1_000</result>