Solution - Simplification or other simple results

Step  1  :

            7
 Simplify   —
            1

Equation at the end of step  1  :

   64                 
  (—— • (15 -  7)) +  7
   4                  

Step  2  :

            16
 Simplify   ——
            1 

Equation at the end of step  2  :

  (16 • 8) +  7

Step  3  :

Final result :

  135