(1) If a partner * acquired some of the partner's interests in the asset on or after 20 September 1985 and some before that day, the partner is taken to have acquired a whole number of the * shares (but not all of them) before that day. The number is the greatest possible that (when expressed as a percentage of all the shares the partner acquires) does not exceed:
• the * market value of the interests in the asset that the partner acquired before that day;
expressed as a percentage of:
• the total of the market values of all the partner's interests in the asset.
(2) The first element of each other * share's * cost base is the sum of the cost bases of the partner's interests that the partner * acquired on or after that day (less any liabilities the company undertakes to discharge in respect of all of those interests) divided by the number of the other shares.
Note: There are special indexation rules for roll - overs: see Division 114.
(3) The first element of each other * share's * reduced cost base is worked out similarly.
(4) The * market value of an interest in an asset is worked out when the partner * disposed of it. The * cost base or * reduced cost base of an interest in an asset is worked out at the same time.