Solution - Simplification or other simple results

Reformatting the input :

Changes made to your input should not affect the solution:

 (1): "b6"   was replaced by   "b^6". 

Step  1  :

Multiplying exponential expressions :

 1.1    b²¹⁶ multiplied by b⁶⁴ = b^{(216 + 64)} = b²⁸⁰

Final result :

  b280