How to filter data in Google Data Studio calculated field?

Question

Analytics

The task is to display the current debt to the supplier / supplier
The data is taken from the calculation table, at the moment the calculation is as follows:
there are 2 values ​​with filters:
1) Wholesale cost with filter Payment option = Prepayment AND Payment to the supplier = Null
2) Calculation with the filter Calculation is not equal null The

question is how to automatically read this data using a calculated field?