Search and replace numbers, words

Hello, 

I need to change 

[variable number of digits] euros 

to 

EUR [same digits]

In some cases, the commas need to be converted to periods, and vice versa, but in other cases, they're already correct. 

I found a great regex solution the other day somewhere on RWS, but I neglected to save the link. 

Could someplace please send me the relevant link(s)? 

Also, if there is regex tutorial for Trados, that would be great. 

Thanks, 

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