Formula to determine refined ticket duration

I use MS SQL Management Studio to pull queries from our ticketing system. Attached is a sample of the data so you can see the formats for each column.

I need to do add a column showing the 'SLA duration' which would subtract the suspend hours from the total duration. Total duration should be the service restore date/time minus the create date/time. I can subtract the time stamps but adding in the suspend hours to the equation messes it up.

The SLA duration should display in a number with decimal

Something like:
[(service restored date/time) - (create date/time)] - Suspend Hours

Current format when exported with headers
service restored date/time - custom
create date/time - custom
suspend hours - general

Note: I have also tried to import this into PowerPivot but am not able to convert the suspend hours to a number. Also, I need to be able to do this with a formula, rather than vb.
Restore-Time.xlsx
awp2012Asked:
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barry houdiniConnect With a Mentor Commented:
Try this formula for row 2 to get a decimal number of hours

=(D2-B2)*24-N(E2)

format as number and copy down column

...alternatively if you want the value as a time value (e.g. 2:30 instead of 2.5) then use this formula

=D2-B2-N(E2)/24

and custom format as [h]:mm, see attached for both versions

regards, barry
Restore-Time-barry.xlsx
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awp2012Author Commented:
Thank you Barry! Excellent!
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