Meaning of 役に立っ in Japanese

Sentences containing 役に立っ

He has a great storehouse of knowledge about historical details but I seriously doubt that's of any use in life.

彼のかれ助言は非常にひじょうに役に立った。

His advice was very helpful.

医師いしであることが旅行りょこう中ちゅう大いにおおいに役に立った。

Being a doctor helped me greatly during the journey.

それは大いにおおいに私のわたし役に立った。

That was of great help to me.