Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "a1"   was replaced by   "a^1". 

Step  1  :

Multiplying exponential expressions :

 1.1    a²¹¹ multiplied by a¹⁸ = a^{(211 + 18)} = a²²⁹

Final result :

  a229