Please Simplify:

Having problems with this, and have many more to do. But if I get some guidence for this one I think I will be ok!

(root5)a^7/2)^4 a^3/a^8

Thank you!

(root5)a^7/2)^4 a^3/a^8

= (√5 a^(7/2))^4 a^3/a^8
= 25a^14 a^3/a^8
= 25a^17/a^8
= 25a^9