what is

\(2.225=2 {225 \over1000}\)

 

Of course, this can be simplified.

 

\(2.225=2{45 \over200}\)

 

But STILL it can be simplified.

 

\(2.225= 2{9\over40}\)

 

I don't believe it can be simplified any further than that.

So, in simplest form,  \(2.225=2{9\over40}\)