What does the cryptic crossword clue "Tony ruminates about dollars, maybe (8,5)" mean?

The wordplay uses an anagram. anagram of TONY + RUMINATES = MONETARYUNITS The answer is MONETARYUNITS.

Tony ruminates about dollars, maybe (8,5)

Daily Mail Cryptic #17378 | 15 Across | 2024-06-12 flower