648 divided by 8 is 81. 
64 goes into 8  8 times (8*8)
8 goes into 8  1 time (8*1)
        
             
        
        
        
Answer:
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Step-by-step explanation:
 
        
                    
             
        
        
        
Width would have to be a quadratic
Use long division to find the other factor of the cubic polynomial P (x).
P (x) factors in case it is reducible over R[x]
if it weren't then P (x) mod R [x] would be a field 
otherwise you could use the Eisenstein Criterion.