The static version should work, too. It will give you plenty of warnings of the type "POLINK: warning: Section name '.debug_info' is longer than 8 characters; truncated." but they can be ignored.
In RichMasm, File/New Masm source opens a list of templates; towards the bottom is a QuadMath example; I just remembered that Quad(immediate) is no longer necessary, i.e. you can use the immediate REAL16 directly:
movups PiBy180, QuadMath(__divtf3, MyPI, Quad(180.0))
PrintLine "PI/180", Tb$, Quad$(PiBy180)
movups PiBy180, QuadMath(__divtf3, MyPI, 180.0)
PrintLine "PI/180", Tb$, Quad$(PiBy180)