よろしくお願いいたします
Meanings
1
I look forward to working with you; please treat me well; please remember me
Used when meeting someone for the first time, starting a new relationship, or asking for future cooperation. Conveys a request for goodwill and support.
I'll be in your care starting today. I look forward to working with you.
I'm a member of the new project. I look forward to working with you.
2
please do; please take care of
A polite request to handle something or take care of a matter. Often used when delegating a task or asking for a favor.
Please take care of processing these documents.
Please take care of the preparations for tomorrow's meeting.