https://learn.microsoft.com/en-us/windows/win32/api/winnt/nf-winnt-unsignedmultiplyhigh?redirectedfrom=MSDN
UnsignedMultiplyHigh function (winnt.h) - Win32 apps | Microsoft Learn
Multiplies two 64-bit integers to produce a 128-bit integer and gets the high unsigned 64 bits.
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