I am trying to make an excel spreadsheet that will do a couple of things. The first is it will tell me how many days have passed since a specific date. For example, if B2 is 1/24/2019, then C2 (which is where I want the number to be) will be a dynamic number that goes up by one as each day pass. So on 1/25/2019, C2 will have the number 1 in it. And on 1/26/2019, it will be 2, and it will go on from there. D2 and E2 would have the same relationship as C2 and D2. Meaning I need for E2 to tell me how many days based on D2. I would need to duplicate this formula all the down to M2 and N2. This will tell me how many days since I serviced a customers' property (column C) and what is the next approximate service date (column D). I hope this makes sense, I know nothing of how to create formulas in excel. Thanks in advance for any help...

S.