This depends what you are rounding to. If you are rounding to the nearest whole number it would be 8. If you are rounding to the nearest tens place it would be 10.
800
800
1 x 809, 809 x 1
1 and 809
30096 + 809 = 30905
809
C/119-214=809
62.2308
809 multiplied by 17 is 13,753.
67 x 809 = 54,203
809 x 90 = 72810
62.2308