Indonesia dwarfs United States: about 1,872,242 km² km² against 9,439,424 km² km². At true size Indonesia is about 5× larger — the whole of United States fits into Indonesia roughly 5 times.
Indonesia sits in Asia, United States in North America. On the old Mercator map the latitude gap distorted how large each felt beside the other; at true size the answer is simply 5×.
The old map muddied it further: Mercator inflates Indonesia about 1× and United States about 2×, so on a Mercator-style map this pair appears 10× apart instead of the true 5×.
Indonesia fits 5× into United States.