That requires two sign figs to appear so it's not that far off of what i guestimated (1 order of magnitude off: 9.01E11 - 8.83E11 is 1.8E10).

If i had said, "if you remove all NASA spending from the budget, the total budget remains the same out to something like 3 or 4 significant figures," then we would need 3 sig figs to see any impact by NASA's budget (3.803E12 - 1.78E10 = 3.785E12 ~ 3.78 ~ 3.8 ~ 4).

I think my ultimate point that NASA's budget is pretty inconsequential to either the budget or the yearly deficit stands since it is only 0.468% of the budget and 1.97% of the deficit.