EvoCalculator.Core/EvoCalculator.Core.Calculation/Columns/BaseColumnWithSum.cs

using System.Linq;

namespace EvoCalculator.Core.Calculation.Columns
{
    public class BaseColumnWithSum : BaseColumn<decimal>
    {
        protected BaseColumnWithSum(int count) : base(count)
        {
        }

        protected decimal Sum
        {
            get { return Values.Skip(1).Sum(x => x); }
        }
    }
}