SubReport Values summed in Report Footer

I've viewed some of the existing questions like this but am a bit stumped.  Can an expert please review this attached document and advise how I can include the summary in my main report footer.
Subreport-Totals.docx
kerikeriAsked:
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Jeffrey CoachmanMIS LiasonCommented:
Hello Again...

This is very rough, ...but I am sure you get the idea...

See the report named :  Orders

JeffCoachman
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Jeffrey CoachmanMIS LiasonCommented:
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kerikeriAuthor Commented:
I'm just about to leave for the weekend (it's Friday 5pm in New Zealand!) but looking at this it looks absolutely what I'm needing.  I've wasted pretty much a whole day trying to do this, so thanks very much as I'll be able to apply your logic and skilled expertise on Monday morning.  Won't give it a thought over the weekend.  Cheers Again.
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Jeffrey CoachmanMIS LiasonCommented:
a bit more "refined"
Database45.mdb
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