Abbastanza bene in Italian means "quite well" in English.
va bene?
"Okay!" in English means Va bene! in Italian.
"I am well" in English means Sto bene in Italian.
"Good! How are you?" in English is Bene! Come stai? in Italian.
Stai bene con i baffi? in Italian is "You're fine with mustaches?" in English.
"You are fine!" in English means Tu stai bene! in Italian.
Va bene
Bene, grazie
sto bene
"O.K., brother!" in English is Va bene, fratello! in Italian.
"Very well!" in English means Molto bene! in Italian.
"Will do!" in English is Io lo farò! ("I will do it!") or Va bene! ("That will do!" or "It's ok!") in Italian.