51
(51 plus (36 divided by 9)) minus 12 = 43
51.3333
-468
489 divided by 51 is 9.59 or 9 with remainder 30.
5.6667
Applying the rules of BODMAS, 51 + (2/ -9) = 51 + (-0.2222....) = -51.2 recurring (that is, -51.22222...)
0.0111
51 inches
True
9.8039
51.6429