intros a b c; case a; case b; case c; simpl in |- *; auto.
intros d c0 A0' c2 d2 c3 nZd2 H'0; case H'0; intros H'1 H'2; auto.
split; auto.
apply divA_multA_comp_l with (1 := cs).
rewrite H'2.
repeat rewrite mult_div_com.
rewrite mult_mon_assoc.
repeat rewrite mult_div_com; auto.
Qed.

Theorem divTerm_multTerm_r :
forall (a b c : Term A n) (nZa : ~ zeroP (A:=A) A0 eqA (n:=n) a),
eqTerm (A:=A) eqA (n:=n) b (multTerm (A:=A) multA (n:=n) (divTerm b nZa) a) ->
eqTerm (A:=A) eqA (n:=n) (divTerm (multTerm (A:=A) multA (n:=n) b c) nZa)
(multTerm (A:=A) multA (n:=n) (divTerm b nZa) c).