Meaning of the word "be supposed to do" in English

What does "be supposed to do" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

be supposed to do

US /bi səˈpoʊzd tə duː/
UK /bi səˈpəʊzd tə duː/
"be supposed to do" picture

Phrase

to be expected or required to do something according to a rule, custom, or arrangement

Example:
You are supposed to wear a seatbelt while driving.
What am I supposed to do with all this leftover food?