Charges covering any number of people like Andrew in the past (7)
I believe the answer is:
princes
'people like andrew in the past' is the definition.
I can't tell whether this definition defines the answer.
'charges covering any number' is the wordplay.
'charges' becomes 'prices'.
'covering' indicates putting letters inside.
'any number' becomes 'n' (mathematical symbol for an unspecified number).
'prices' enclosing 'n' is 'PRINCES'.
'of' is the link.
Can you help me to learn more?
(Other definitions for princes that I've seen before include "king's followers?" , "Male royals" .)