Given a calculator form with the HTML code and the C# code to add two numbers. Please answer below questions after the given code.

(a) What is the purpose of using table in the html code (1 mark) and what and mean (1 marks 0.5 for each)

(b) Extend the html code and C# code to include the subtraction operation (2 marks)

(c) Extend the html code and C# code to include the multiplication operation

HTML code:

C# Code: double value1 = Convert.ToDouble(txtFirstNumberText Irin(); double value2 = Convert.ToDouble(txtSecondNumber:TextTrim(); string operator1= DropDownList1.SelectedValue; double result = 0; switch (operator1) { case "+": result value1 + value2; break; } lblResult.Text "Output is: + result.ToString()

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