Canada dwarfs Iran: about 9,872,102 km² km² against 1,622,847 km² km². At true size Canada is about 6.1× larger — the whole of Iran fits into Canada roughly 6 times.
Canada sits in North America, Iran 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 6.1×.
The old map muddied it further: Mercator inflates Canada about 4.1× and Iran about 1.4×, so on a Mercator-style map this pair appears 17.7× apart instead of the true 6.1×.
Iran fits 6× into Canada.