Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "10.5" was replaced by "(105/10)". 2 more similar replacement(s)

Step  1  :

            21
 Simplify   ——
            2 

Equation at the end of step  1  :

  125   21
  ——— • ——
  10    2 

Step  2  :

            25
 Simplify   ——
            2 

Equation at the end of step  2  :

  25   21
  —— • ——
  2    2 

Step  3  :

Final result :

  525             
  ——— = 131.25000 
   4