(1) The assessable income of each class includes the amount (if any) that is left over after the overall capital gain for that class has been reduced in accordance with this section.
(2) If there is an overall capital loss for a particular class of assessable income, the loss is to be applied in reduction of overall capital gains for the remaining class.
(3) Any accumulated net capital loss for the immediately preceding year of income is to be applied in reduction of residual overall capital gains for the classes of assessable income in the following order:
(b) other assessable income.