public int Multiply(int number1, int number2) { return(IntCalculator.Instance().Multiply(number1, number2)); }
public int Substract(int number1, int number2) { return(IntCalculator.Instance().Subtract(number1, number2)); }
public int Divide(int number1, int number2) { return(IntCalculator.Instance().Divide(number1, number2)); }
public int Add(int number1, int number2) { return(IntCalculator.Instance().Add(number1, number2)); }