questions relating to making $3000 and the 5%


i’m from Australia and was wondering if my profit is in Australian dollars do i use a site like to find out if i have earned over $3000 us dollars or how?

2nd is that i just wanted to be sure i understand correctly, if in lets say the first quarter i earn from my game $2000 and then in the 2nd quarter i earn $3500, i would owe nothing for the first because i’m under $3000 but for the 2nd i would owe the bit that goes over $3000 which would be 5% of 500?
Just to note these are random numbers, i’m just using them as examples.

Yes, to handle currency conversion you can use at the time of royalty reporting.

You are correct in your example quarterly revenue/royalty owed.