Subtract a time from a time amount in a cell using a formula in another cell.

I have a spreadsheet to calculate time worked in a week.
The daily times are added together.
Then an amount of 45 hours should be deducted from the weekly time to calculate the overtime.
I get the weekly total time (R8), but cannot create the formula to subtract 45 hours from R8 in U8.
Put differently: How do I write a formula in U8 that gives me the total time in R8 minus 45 hours?
Picture below and worksheet attached.
The example worksheet picture.Time.xlsx
Fritz PaulAsked:
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Kyle AbrahamsSenior .Net DeveloperCommented:
u8 = R8 - time(45, 0, 0)
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Rodney EndrigaData AnalystCommented:
You can use this formula in Cell U8:
=R8-TIME(45,0,0)

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This is the normal format for the TIME function. You can also include minutes and seconds in the appropriate sections, if needed.

TIME ( hours, minutes, seconds)
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Saurabh Singh TeotiaCommented:
You need to use this formula in U8

=R8-(45/24)

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Guys..

Time(45,0,0) Won't go more then 24 hours and the answer will be 0.88 rather 1.88 which is the correct answer in this case...

Enclosed your file for your reference...

Saurabh...
Time.xlsx
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Kyle AbrahamsSenior .Net DeveloperCommented:
I stand corrected, good to know.
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Fritz PaulAuthor Commented:
Thanks. Superb.
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