Alright, so an average of 2783.76 infra x 103 nations is 286727.28 infra damage, which results in 860181.84 NS. An average of 358.91 tech x 103 nations is 36967.73 tech damage, which results in 184838.65 NS. The total NS damage from your averages...1045020.49 NS. Your math does not match.
Edit: Total losses are 869000 NS.