Very Large Map size scale?

[Artfactial]

I am planning to make a height map of my current map and import it into Cities Skylines to continue the town into modern times.

I kind of have a conversion scale: Banished tiles= 2x2m, Cities tiles=8x8m: C=B*4




Now, to make things slightly easier (and to somehow make up for the large pieces of land that will fall out of the original Banished map borders:

I need the size in amount of tiles for the <abbr title="Colonial Charter">CC</abbr> Very Large map, and could find them. Does anyone know?