Didn't expect to leave office this late on a Friday evening. Oh, well, it's 20:45, not 22:45, so perhaps I shouldn't complain this much.
However, this was purely because of an absolute programming error of Microsoft excel!! It made me having to redo all the work I did this morning. Donkey work!! On one hand it's a powerful tool, but on the other hand, it can be disastrous if one relies on it for calculation too much. I sure did find a technical glitch of MS excel today. Just don't bother to report to M$... Let it sink.
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