Tracing the origin of a Turbotax calculated Investment Expense input to line 68080 of 2023 CRA tax return. Where do I find the calculation to this entry?

This question has been asked before by another user but I do not see an answer. I need to understand where this entry comes from. I assume it has to do with 23200. The foreign tax was much higher than shown in this field and the difference seems to go to 68080. Now the CRA wants calculations for both fields. What did TurboTax do here?