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If the decimal point of a number is moved one place to the right, the number obtained is 2.25 larger than the original number, and the original number is______ ．
Let this number be X. because the decimal point of the decimal is moved one place to the right and expanded 10 times, the number obtained is 10x. According to the meaning of the title, we can get: & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 10x-x = 2.25 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 9x = 2.25 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X =
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