using System;

public class Program

{

    public static void Main()

    {

        decimal totalInheritance = 1587654M;

        decimal administratorPercent = 0.0025M;

        int parents = 2;

        int children = 3;

        int relatives = 10;

        //if one portion = x then 10x+3*100x+2*200x=totalInheritance - totalInheritance*administratorPercent

        // x=(totalInheritance - totalInheritance*administratorPercent)/710

        decimal onePortion = (totalInheritance - totalInheritance*administratorPercent)/710;

        //int onePortionRounded = Decimal.ToInt16 (onePortion); //potential overflow issue

        int onePortionRounded = (int)onePortion;

        System.Console.WriteLine("One Portion " + onePortionRounded);

        //Calculate relatives total

        int relativesInherit = relatives*onePortionRounded;

        System.Console.WriteLine("Relatives Get  " + relativesInherit);

        //Calculate children total

        int childrenInherit = children*100*onePortionRounded;

        System.Console.WriteLine("Children Get  " + childrenInherit);

        //Calculate parents total

        int parentsInherit = parents*200*onePortionRounded;

        System.Console.WriteLine("Parents Get  " + parentsInherit);

        //Calculate admin total

        decimal adminInherit = totalInheritance - relativesInherit - childrenInherit - parentsInherit;

        System.Console.WriteLine("Admin Get  " + adminInherit);

    }

}

​