Offset:- The offset is the distance (in bytes) relative to the start of the page. I.e.,
Offset= logical_address mod page_size.
Physical address = (physical_page_number * page_size) + offset
Page Number=Logical Address / Page Size
According to question given,
Page number= Logical Address / Page Size = 1142/ 200 = 5
Offset = logical_address mod page_size = 1142%200 = 142