public void OperationRun()
{
switch (operation)
{
case Operation.None:
break;
case Operation.Add:
Lop_Res = Lop_Res.Sum(Rop);
break;
case Operation.Sub:
Lop_Res = Lop_Res.Substract(Rop);
break;
case Operation.Mul:
Lop_Res = Lop_Res.Multiply(Rop);
break;
case Operation.Dvd:
Lop_Res = Lop_Res.Devide(Rop);
break;
}
}