two plus two is four in any base, not just decimal.

In unary, base 1, it looks like:
 11 + 11 = 1111
In binary, base 2, it looks like:
 10 + 10 = 100
In ternary, base 3, it looks like:
 2 + 2 = 11
In base 4 it looks like:
 2 + 2 = 10
In every base > 4 it looks like:
 2 + 2 = 4
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Refactoring NearestFittingContext