That Time I Got Reincarnated as a Slime: Tensei shitara Slime datta Ken

[KrayZ33]

He numbered them in the light novel.

haha, that's actually funny. Too bad they didn't show that (yet) since that would flesh out Rimuru's character somewhat

I think the orcs were distributed here and there in the forest, not the mass of 150,000 in a single place. It's also a really big forest, big like a whole country.

Ya, but 150k is a *huge* number... especially during medieval times. Going from basicaly a few thousands to this in mere days/hours is insane.
It's also insane to assume that they have the logistics to manage a population like that and distribute them "evenly".

The current refugee crisis is like 0,x% of that in relative numbers.
While we have troubles with a mere percentile (1 refugee every 10.000 inhabitants or something), they have to deal with a 100% increase in population (if you count the lizards) a 10000% increase (or whatever) if you don't... and I really doubt the pigs/orcs will live in the marches considering how they struggled moving in there.

I think this issue was brushed aside way to easily for the moment. It's not like they have the stockpiles necessary and ready. You can't just increase your harvest like that - no one would've been prepared for that.