How can i construct the regular expression

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Reference no: EM133693556

Problem

I have a language where any string (representing exactly an integer number) accepted is a multiple of 40. In the language a number cannot start with a 0 unless it is just 0, and the empty string is not considered to be a number.

I believe this language is regular and I want to find a regular expression for its elements. How can I construct the regular expression without having to construct a GNFA and go through the whole process of converting it into a regular expression? Can I take advantage of the structure of the number?

Reference no: EM133693556

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