Percent_Processor_Time / count of processor - syntax formula

Hi,
I have a problem with using dimamic query for Percent_Processor_Time(%) with division to count of processor. Currently graph is over 100%

Tried syntax: OPPERFELATAPP1.OTPortal.Process.win_proc.Percent_Processor_Time/8
but it doesn’t work

What is tipical syntax for such operation with division?