fairly simple
David avait aussi une suggestion assez simple.
David also had a fairly simple suggestion.
Actually, it's quite simple.
Pretty simple.
Non, "la règle", c'est assez simple à comprendre ?
No, is “the rule” pretty easy to understand?
— Decision to Leave (2022)
Quant à moi, je suis une personne assez simple.
As for me, I'm a fairly simple person.
Le travail semblait assez simple, mais il m'a pris une semaine.
The work seemed fairly simple, but it took me a week.
En fait, c'était assez simple.
Actually, it was pretty simple.
C'est un concept assez simple.
It's a fairly simple concept.