I am a little stuck on this one and hopefully somebody will be able to help me out. I have a large data file that contains the usage for all my parts. I am looking to average their usage so I can plan my purchasing accordingly. What I am hoping for is a formula that will count the number of months between the first issue of a part and today then divide the total usage by that number.
I have attached a sample of of my data.
Thanks in advance.
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