15.78.15  DIVIDE 

Divides  the  coordinate  by the value or a value by a coordinate.  If you
are dividing X,Y, or Z by a constant the DX,DY, or DZ are also divided  by
the  constant.   In addition if ERROR was specified then the final Dn will
be modified by the specified error.  DY=SQRT(DY**2+(e*n/c)**2)/c  where  C
is the specified constant.
                                  example
To divide y by 2+-0.1
     Y=Y DIVIDE 2 ERROR=.1
          or...
     Y=Y / 2 ERROR=.1 To divide 2+-0.1 by Y
     Y=2 ERROR=.1 DIVIDE Y
          or...
     Y=2 ERROR=.1 / Y