Solution - Simplification or other simple results

Step  1  :

             1
 Simplify   ——
            18

Equation at the end of step  1  :

       1     1
  (7 • —) • ——
       4    18

Step  2  :

            1
 Simplify   —
            4

Equation at the end of step  2  :

       1     1
  (7 • —) • ——
       4    18

Step  3  :

Final result :

   7           
  —— = 0.09722 
  72