Best way to convert Nominal values by using expressions

I’ve set of data with INCH measurement unit , the values are so missy and I’m trying to figure out a way to unified them and convert them to a way I can work with them 
Example of the values : 

1. 1/8 , 1/16 , 19/17 , 13/3 , 1.1/8
2. 0.139 , 0.07 , 3.37  , .250 , 0.14
3. 3-1/8 , 1-1/26 , 1-18/23 , 10-1/2
4. 20 , 3 , 10 
5. 0.30-0.40  
6. 0.094+/-0.004 
7. 1.046 ( 1-1/16)
8. Some of them have text and numbers 

I’ve read about regular expression but how I can defined the regular expression and use it in Rapid Minor to divide these complex values. 
If there’s any other way to solve this issue I would appreciate any suggestions to solve that.