Kazakhstan dwarfs Russia: about 2,712,747 km² km² against 16,879,701 km² km². At true size Kazakhstan is about 6.2× larger — the whole of Russia fits into Kazakhstan roughly 6 times.
Kazakhstan sits in Asia, 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 6.2×.
The old map muddied it further: Mercator inflates Kazakhstan about 2.3× and Russia about 6.1×, so on a Mercator-style map this pair appears 16.6× apart instead of the true 6.2×.
Kazakhstan fits 6× into Russia.