Add spaces: Hewasamemberofthelearnedsocietiesofmanynations.

Answer: He was a member of the learned societies of many nations.

Add spaces: ThisbecameknownasHilbert'sFifthProblem.

Answer: This became known as Hilbert 's Fifth Problem.

Add spaces: DisplayPowerboatwithelectronicmonitorPOS6

Answer:
Display Power boat with electronic monitor POS 6