Please help: what is the probability? If you win what is your net profit? Find the expected value? Been trying for an hour can someone please help

There are 1000 possible outcomes (from 000 to 999).
Then, the probability of winning is: 1/1000 = 0.001
And the probability of losing is: 999/1000 = 0.999
The net profit is computed as follows:
net profit = winning prize - cost to play
net profit = $394.46 - $1.35
net profit = $393.11
The expected value is computed as follows:
E = probability of winning*net profit - probability of losing*cost to play
E = 0.001*$393.11 - 0.999*$1.35
E = -$0.96