This is the 405th most frequent Finnish word.
helposti
Easily.
The word 'helposti' here is used as an adverb to describe the manner in which the person learns things.
Hän oppii asioita helposti.
He/She learns things easily.
In this sentence, 'helposti' modifies the verb 'ratkea', indicating the manner in which the problem could possibly resolve.
Tämä ongelma ei ratkea helposti.
This problem does not solve easily.
Here, 'helposti' is used to denote the likelihood or ease with which something might happen.