Argentina dwarfs Russia: about 2,782,703 km² km² against 16,879,701 km² km². At true size Argentina is about 6.1× larger — the whole of Russia fits into Argentina roughly 6 times.
Argentina sits in South America, Russia in Europe. 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 Argentina about 1.5× and Russia about 6.1×, so on a Mercator-style map this pair appears 24.8× apart instead of the true 6.1×.
Argentina fits 6× into Russia.