Canada dwarfs Indonesia: about 9,872,102 km² km² against 1,872,242 km² km². At true size Canada is about 5.3× larger — the whole of Indonesia fits into Canada roughly 5 times.
Canada sits in North America, Indonesia in Asia. On the old Mercator map the latitude gap distorted how large each felt beside the other; at true size the answer is simply 5.3×.
The old map muddied it further: Mercator inflates Canada about 4.1× and Indonesia about 1×, so on a Mercator-style map this pair appears 21.6× apart instead of the true 5.3×.
Indonesia fits 5× into Canada.