Mixed operation of rational numbers, The interest tax of a certain one-year fixed deposit with an interest rate of 20% (for example: deposit 100 yuan for one-year period, and the calculation formula of the income interest of the due depositor after tax is 100 * 2.25% - 100 * 2.25% * 20%). If a depositor has a one-year fixed deposit with an interest rate of 450 yuan after tax, how much is the deposit?

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