25) (a⁸)³·a⁵ / a¹⁹, a=3

1. Simplify the numerator: a²⁴·a⁵ / a¹⁹ = a²⁹ / a¹⁹.
2. Simplify using exponent rules: a²⁹⁻¹⁹ = a¹⁰.
3. Substitute a=3: 3¹⁰ = 59049.