The table shows 1 for / and 3 for %.  The program below shows that % binds before / because the value of the "p" expression matches the "x" expression.  The "y" expression shows the result of binding / first.

Rec := {UNSIGNED4 n, REAL8 x, REAL8 y, REAL8 p};
Rec draw(UNSIGNED c) := TRANSFORM
  SELF.x := ((RANDOM() % 1000000) / 100000000) - 0.005;
  SELF.y := (RANDOM() % (1000000 / 100000000)) - 0.005;
  SELF.p := RANDOM() % 1000000 / 100000000 - 0.005;
  SELF.n := c;
END;
v := DATASET(10000, draw(COUNTER));
t := TABLE(v, {avg_x:=AVE(GROUP,x), mn_x:=MIN(GROUP,x), mx_x:=MAX(GROUP,x),
    avg_y:=AVE(GROUP,y), mn_y:=MIN(GROUP,y), mx_y:=MAX(GROUP,y),
    avg_p:=AVE(GROUP,p), mn_p:=MIN(GROUP,p), mx_p:=MAX(GROUP,p)});
OUTPUT(t);