Africa dwarfs Peru: about 30,370,000 km² km² against 1,296,279 km² km². At true size Africa is about 23.4× larger — the whole of Peru fits into Africa roughly 23 times.
The old Mercator map treated both about equally (1× vs 1× inflation), so at least their relative sizes were preserved — even if both were drawn at the wrong absolute scale.
Peru fits 23× into Africa.