1. Cumulative debt interest payments.
2. Cumulative debt repayments.
3. The costs for maintaining the property in a good state, estimated by the formula:
$$ {1 - e^{-( t/T )^2}} $$
4. The invested assets value, estimated by the formula:
$$ {S ((1+g)^t - 1)(1+g)/g} $$
5. The amount to be paid at the end of debt contract.