public class Calculations
{
	int x, y;
	Problems p;
	
	public Calculations()
	{
		p = new Problems();
	}
	
	public int sum(int z)
	{
		int answer = x + y + z;
		return answer;
	}
	
	public int div(int z)
	{
	    //int answer = sum(z)
	        int answer = sum(z);
		answer = answer + p.divSum(answer, z);
		return answer;
	}
}