Coping formulas within Excel

Hello, I have the attached Excel spreadsheet. The column formulas are limited to line 74.

When I've tried to copy the formatting and formulas down to row 25,000 for some reason the formulas copy, but they stop working after line 74.

Are you ale to help?
Real-Time-Inventory-in-Excel.xlsx
jspcAsked:
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Shaun VermaakTechnical SpecialistCommented:
You could convert it to a table and simply add lines to it
Real-Time-Inventory-in-Excel.xlsx
jspcAuthor Commented:
Hello, thanks for your reply.

I've opened your file and it is the same as mine in the original post.

I'm not sure you understand my question. After the 74 line, the formulas stop working after you try to copy them down.
Roy CoxGroup Finance ManagerCommented:
using your file I can drag the formulas below row 74 with no problem. However, it's a really bad idea to have numerous rows of unused formulas, especially array formulas in a sheet, because you will find calculation can be slow.  With a proper Table you can use a Calculated Column which expands the formulas as rows are added

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Shaun VermaakTechnical SpecialistCommented:
I've opened your file and it is the same as mine in the original post.
It is not the same, it is a table. Add a new line and you will see the whole line is populated
Roy CoxGroup Finance ManagerCommented:
Pleased to help
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