1990+2011+6300-2300

Let's perform the calculation step by step:

1. Start with \(1990 + 2011 = 4001\).
2. Next, add \(6300\): \(4001 + 6300 = 10301\).
3. Finally, subtract \(2300\): \(10301 - 2300 = 8001\).

So, \(1990 + 2011 + 6300 - 2300 = 8001\).