Well I would guess there are 5 times as many monkeys? I need more details and also just take it like this if there are 2 elephants theres 10 monkeys 3 elephants 15 monkeys.
It would be rounding it to 600000 because 600000 is the closest 100000x amount where x is an integer. I hope this helped and if I am right could I have brainliest? :)