How to parse the form 上げしやすい？


Someone is saying 初心者の子がいたから― レベル上げしやすい場所を教えてた (I showed a newbie a good place
to level up).

Normally やすい is added to a verb without ます、but then what is the root of the
form 上げします? I don't see 上げす in a dictionary.

Nor does 上げ seem to exist in dictionary, as an independent word that I could
combine with する.




It is treating
[レベル上げ](https://dictionary.goo.ne.jp/word/%E3%83%AC%E3%83%99%E3%83%AB%E4%B8%8A%E3%81%92/#:%7E:text=%E3%83%AC%E3%83%99%E3%83%AB%E2%80%90%E3%81%82%E3%81%92%E3%80%90%E3%83%AC%E3%83%99%E3%83%AB%E4%B8%8A%E3%81%92%E3%80%91,%E3%83%AC%E3%83%99%E4%B8%8A%E3%81%92%E3%80%82)
as a noun and the verbal is レベル上げをする. And then for the -やすい construction you
get the masu stem of する + レベル上げ: 上げしやすい




It is treating
[レベル上げ](https://dictionary.goo.ne.jp/word/%E3%83%AC%E3%83%99%E3%83%AB%E4%B8%8A%E3%81%92/#:%7E:text=%E3%83%AC%E3%83%99%E3%83%AB%E2%80%90%E3%81%82%E3%81%92%E3%80%90%E3%83%AC%E3%83%99%E3%83%AB%E4%B8%8A%E3%81%92%E3%80%91,%E3%83%AC%E3%83%99%E4%B8%8A%E3%81%92%E3%80%82)
as a noun and the verbal is レベル上げをする. And then for the -やすい construction you
get the masu stem of する + レベル上げ: 上げしやすい

