"Smoothing out" faces and edges after and extrude cut

Hi guys,

So i created this geometry and i needed to made an extrude cut.
Thing is this gerometry is curved so the cut has 'left overs" which i want to smooth out with the relevant faces.

Any tips on how to do that, or to extrude in a way which I wont have these left overs?

Thanks!

SolidworksParts And Features