function pv returns "error 509"

What I’m trying to do is to calculate present value example from financial courses. That’s what I type in a cell:
=PV(0,080,1,0,981814).
Excel gives 454770, while Libre Office 4.2.7.2 (build ID: 420m0(Build:2)) gives “error 509”.
Any suggestions?

Well, I’ve corrected the error by replacing commas with semicolons.
But now I get negative number of -454770. Why the number is negative?