Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "a6"   was replaced by   "a^6". 

Step  1  :

Equation at the end of step  1  :

  (2•3a6) • a

Step  2  :

Multiplying exponential expressions :

 2.1    a⁶ multiplied by a¹ = a^{(6 + 1)} = a⁷

Final result :

  (2•3a7)