[issue37822] Add math.as_integer_ratio()

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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keywords: +patch
pull_requests: +14938
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/15210

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37822>
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