Okay.. I suck MAJORLY at math.
I'm currently grinding in Runescape.

Could someone tell me if my math is correct?

I need 60,900 xp to level up my Constitution

1 lvl 83 Roach = 100 xp in Constitution
I can kill 10 roaches in 10 minutes
Which would give me 1000 xp in an hour.

And now I start confusing myself.
60,900 (total xp)/100 (single xp) = 609/10 (minutes)= 60.9 hours until I level.
???But if I get 1,000 xp an hour, should I be dividing by 1,000 or what?

It doesn't help that I'm in a brain fog today.