Hello i hope I got the right forum where i can ask questions. I am a new Excel user and was desperate trying to know some basic math. I am calculating the number of days but I havn't had idea what and how to do it. I want to find the exact number of days lets say from 1/3/2012 - 2/25/2015. What is the correct formula. I already tried it several times following this formula; =A1-B1 and press enter but what i got is this #value
Thanks
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