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Five 'w' could signify the five common question words:whowhatwhenwhywhere
It's called a calculator.
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "times", "equals", etc. There are no visible symbols after the second x, for example. More important, there are no equals signs and so there is nothing that could be an identity.
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Is this question regarding modulo arithmetic?