Russia dwarfs Saudi Arabia: about 16,879,701 km² km² against 1,925,871 km² km². At true size Russia is about 8.8× larger — the whole of Saudi Arabia fits into Russia roughly 8 times.
Russia sits in Europe, Saudi Arabia 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 8.8×.
The old map muddied it further: Mercator inflates Russia about 6.1× and Saudi Arabia about 1.2×, so on a Mercator-style map this pair appears 44.3× apart instead of the true 8.8×.
Saudi Arabia fits 8× into Russia.