Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "4.2" was replaced by "(42/10)". 2 more similar replacement(s)

Step  1  :

            21
 Simplify   ——
            5 

Equation at the end of step  1  :

  106         21
  ——— • (0 -  ——)
  10          5 

Step  2  :

            53
 Simplify   ——
            5 

Equation at the end of step  2  :

  53   -21
  —— • ———
  5     5 

Step  3  :

Final result :

  -1113             
  ————— = -44.52000 
   25