Very large sheet not processing at once.

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I have a massive workbook that takes 5 minutes per page to process, once i drop in my data. To allow me to enter in the data faster i switched formula calculation to manual. That way i can drop all the data in, then calculate it all at once, thus saving effort.
However, when i hit F9 it doesnt calculate the whole workbook. I have to go in and do shift+F9 on every page manually. Any ideas how to calculate the whole file at once?