Cause it's three-six-nine time!
Maybe I'm imagining it but restraint seems to result in finer focus.
If you're going to add one columns digits together then you should add both. 11:51 = 1 + 1 : 5 + 1 = 2 : 6 = 2 + 6 = 8
Just seems half-assed when only one column is manipulated.
Okay. I may know a thing or two about digits.
15-13=two
All about columns of two.
14+6=20