Mali dwarfs Oceania: about 1,258,185 km² km² against 8,600,000 km² km². At true size Mali is about 6.8× larger — the whole of Oceania fits into Mali roughly 6 times.
The old Mercator map treated both about equally (1.1× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Mali fits 6× into Oceania.