-(11.5g, 11.5gr., 11.5, .....

Mark,
you can simplify things a bit by using a wildcard... 11.5* will eliminate anything that starts with 11.5, regardless of what comes after, such as 11.5g 11.5 grams, 11.5gr., etc.

Sometimes I add 300, 500, 600 inside the -( )