by the way
US /baɪ ðə weɪ/
UK /baɪ ðə weɪ/

1.
a propósito, por falar nisso
used to introduce a topic or information that is not directly related to the current conversation but is considered relevant or interesting
:
•
By the way, did you hear about Sarah's new job?
A propósito, você ouviu falar do novo emprego da Sarah?
•
I need to go to the store. By the way, do you need anything?
Preciso ir à loja. A propósito, você precisa de alguma coisa?