I'm using a bit of clunky large spreadsheet that contains various metrics broken down daily for each day of the year.
I've created a worksheet that pulls that information into one place use the HLOOKUP function by allowing the user to enter the date they want and returning the corresponding metrics for the day.
What I'm stuck on, is getting SUM of that same information, using two date points entered by the user. In this example if date 1 is in $B$1 and date two is entered into $C$1 - how would I add the value of those two dates and every date in between?
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