Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "3.25" was replaced by "(325/100)".

Step  1  :

            13
 Simplify   ——
            4 

Equation at the end of step  1  :

  13
  ——
  4 

Step  2  :

                 13
 Divide  21  by  ——
                 4 

Final result :

  84           
  —— = 6.46154 
  13