How do I solve 8 across in Press and Journal Cryptic unknown?

Question

Accepted Answer

8 across reads "A foreign currency is imaginary" (6 letters); the answer is UNREAL. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

A foreign currency is imaginary (6)

8A — A foreign currency is imaginary (6) — UNREAL