"fairly easily" is a correct and usable phrase in written English. You can use it to describe an action or task that can be accomplished with some effort, but not a large amount of effort. For example, "He learned the new language fairly easily."
"We can tell fairly easily".
Gazza serves out fairly easily.
These concerns can be addressed fairly easily.
This problem can be solved fairly easily.
The two groups mix fairly easily.
Lennox was favored to win fairly easily.
You can spot the place fairly easily.
The justification comes fairly easily to him.
"That could be done fairly easily.
fairly easily handle the processing requirements of OggSquish.
Some of the damage can be mitigated fairly easily.
When I feel like I can't trust my brain 100%, Ludwig really comes in handy. It makes me translate and proofread faster and my output more reliable.
Claudia Letizia
Head Translator and Proofreader @ organictranslations.eu