How to explain the explanation of the following result: from float to numeric?

Question

DECLARE @f AS FLOAT = '29545428.022495'; SELECT CAST(@f AS NUMERIC(28, 14)) AS value; 

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 29545428.02249500200000 

Today I read this example. I understand the problem of floating point numbers, but I don't understand the result of this casting. How it works?

UPDATE

First we can replace varchar in the first line, the result will be the same.

 DECLARE @f AS FLOAT = 29545428.022495; 

Secondly, I think the problem is casting. Try the following code.

 DECLARE @f AS FLOAT = 29545428.022495; select @f - 29545428; 

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 0,0224950015544891 

Perhaps this is the reason 002 at the end. It works with other numbers.

UPDATE 2

Well, I think I get it wrong. Here's a related question and answer.