Financial calculator (emulator) that gives a negative result in compound interest

I am studying brokerage. And I am using this emulator to study.

I am getting negative results when doing compound interest calculations.

I am doing it this way:

 1: 10000
 2: I press enter
 3: I press PV
 4: enter "3" and press "i" key
 5 enter "4" and press "n" key
 6 I press FV

I am doing something wrong?