Answer,
1,780 + 20 = 1,800
Or, (3^2) x 200 = 1,800
Explanation
To be honest I'm not quite sure if this was the answer you were looking for.
But, anyway this is how I did it
9 x 200 = 1,800
1,800 - 20 = 1,780
1,780 + 20 = 1,800
For the second one I did,
(3^2) because, that = 9 so It's the same as 9 x 200 in a different form like the answer above.
I truly hope this helps :-)
