1) Unto does not mean "for the attention of" It has never had this definition. See this "learner's dictionary" for an explanation. com/search/unto 2) Augend and addend are specialized mathematical terms.
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bepleasedI have a naive idea of that.You always say this, and yet your ideas are not at all naive. "Naive" suggests a viewpoint that is simpler than the reality. Your viewpoint is always infinitely more complicated than the reality!