Divide Tin Volume surface based on cut elevation range

Hi again.I am liking dynamo a lot
Today i am trying to calculate volume surface from Datum surface,Existing ground surface and datum surface and existing rock surface.and then subtracting rock cut volume to existing ground volume to get net volume surface.But i am stuck now,because price of ruck cut in my country has different price.For example o to 1 m cut has different price and rest has different.Can we divide Tin volume of rock based on elevation and then i can continue myself
Till now i have done this using best Camber nodes