In GIPS, fees expenses or income? net, understand, difficult, management

Palantir

management fee. Transaction fee. Etc Are all the expenses? If starting from 50000 and got 100000 then 100% return. And there was 10000 of fee then gross of fee return is 80% and net of fee fee return to be 100%?

I just read that gross of fee return and net of fee return all should be reduced by the bundle fee. As above calculation of 100% return of net of fee, it is difficult to understand why there should be fee reduction to the net of fee return.