<span>feel -
(noun)an intuitive awareness"he has a feel for animals" or "it's easy when you get the feel of it";</span>
        
             
        
        
        
ANSWER

EXPLANATION
The given expression is 

We regroup the numerical parts to get;

Now let us simplify the negative numbers.

We now subtract 19 from 42 to get;

We can't simplify further
Hence the simplest form is:

 
        
             
        
        
        
Answer: 64,307
There you go ;)