Afghanistan dwarfs Africa: about 642,058 km² km² against 30,370,000 km² km². At true size Afghanistan is about 47.3× larger — the whole of Africa fits into Afghanistan roughly 47 times.
The old Mercator map treated both about equally (1.5× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Afghanistan fits 47× into Africa.