当然だ/当たり前だ => natural; as a matter of course N2
させてあげる => (Allow) N4
Allow
てあげる => Help, do for N4
Give and take advice
てさしあげる => Do for N4
Give and take advice
てあげてくれ => to do for; to do a favor N3
Coercion
てあげる => to do for; to do a favor N5
てさしあげる => to do something for somebody N4
Respectful, humble
げ => Looks A N2
Adjectival, Descriptions
あげる => ...Up (Upwards) N4
Direction
...てあげてください => to do for; to do a favor N4
Benefit
おかげだ => thanks to... N3
Cause, reason
上げる => to finish doing ~ N3