If this Division applies, the amount of the following is worked out under the Division:
(a) the * tax cost setting amount for the purposes of item 2 in the table in section 701 - 60 for each * membership interest in the leaving entity that * members of the old group held; and
(b) if 2 or more entities cease to be * subsidiary members of the group at the same time because of an event happening in relation to one of them--the tax cost setting amount for the purposes of item 4 in the table in that section for each membership interest that the leaving entity holds in any of the other entities.