Not a native speaker, but I don't get the pun.
"3.5 billion and 90 million berries!!"
3= mi
5=go, ko itsutsu, itsu, etc
90= kurei?
You could read it as 359, which could be pronounced zankoku, meaning "cruel; brutal; ruthless; merciless; inhuman"
Does anyone else see a pun?
fuck I'm so many pages behind now