Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "*-4" was replaced by "*(-4)".

Step  1  :

            -4
 Simplify   ——
            5 

Equation at the end of step  1  :

             -4
  0 -  (50 • ——)
             5 

Step  2  :

Final result :

  40