How to make calculator

function PressedOne()
	script.Parent.Question.Text = script.Parent.Question.Text.. "1"
end
function PressedTwo()
	script.Parent.Question.Text = script.Parent.Question.Text.. "2"
end
function PressedThree()
	script.Parent.Question.Text = script.Parent.Question.Text.. "3"
end
function PressedFour()
	script.Parent.Question.Text = script.Parent.Question.Text.. "4"
end
function PressedFive()
	script.Parent.Question.Text = script.Parent.Question.Text.. "5"
end
function PressedSix()
	script.Parent.Question.Text = script.Parent.Question.Text.. "6"
end
function PressedSeven()
	script.Parent.Question.Text = script.Parent.Question.Text.. "7"
end
function PressedEight()
	script.Parent.Question.Text = script.Parent.Question.Text.. "8"
end
function PressedNine()
	script.Parent.Question.Text = script.Parent.Question.Text.. "9"
end
function PressedZero()
	script.Parent.Question.Text = script.Parent.Question.Text.. "0"
end
function SelectedAddition()
	if string.find(script.Parent.Question.Text, " - ") or string.find(script.Parent.Question.Text, " + ") or string.find(script.Parent.Question.Text, " x ")  or string.find(script.Parent.Question.Text, " ÷ ") then
		return
	else
		script.Parent.Question.Text = script.Parent.Question.Text.. " + "
	end
end
function SelectedSubtraction()
	if string.find(script.Parent.Question.Text, " - ") or string.find(script.Parent.Question.Text, " + ") or string.find(script.Parent.Question.Text, " x ")  or string.find(script.Parent.Question.Text, " ÷ ") then
		return
	else
		script.Parent.Question.Text = script.Parent.Question.Text.. " - "
	end
end
function SelectedMultiplication()
	if string.find(script.Parent.Question.Text, " - ") or string.find(script.Parent.Question.Text, " + ") or string.find(script.Parent.Question.Text, " x ")  or string.find(script.Parent.Question.Text, " ÷ ") then
		return
	else
		script.Parent.Question.Text = script.Parent.Question.Text.. " x "
	end
end
function SelectedDivision()
	if string.find(script.Parent.Question.Text, " - ") or string.find(script.Parent.Question.Text, " + ") or string.find(script.Parent.Question.Text, " x ")  or string.find(script.Parent.Question.Text, " ÷ ") then
		return
	else
		script.Parent.Question.Text = script.Parent.Question.Text.. " ÷ "
	end
end
function FindAnswer()
	local Question = script.Parent.Question.Text
	local split = Question:split(' ')
	local e1 = split[1]
	local s = split[2]
	local e2 = split[3]
	wait(0.1)
	if s == "+" then
		script.Parent.Question.Text = e1 + e2
	else
		if s == "-" then
			script.Parent.Question.Text = e1 - e2
		else
		if s == "x" then
			script.Parent.Question.Text = e1 * e2
			else
				if s == "÷" then
					script.Parent.Question.Text = e1 / e2
				end
			end
		end
	end
end
function ClearQuestion()
	script.Parent.Question.Text = ""
end
script.Parent.Zero.MouseButton1Click:Connect(PressedZero)
script.Parent.One.MouseButton1Click:Connect(PressedOne)
script.Parent.Two.MouseButton1Click:Connect(PressedTwo)
script.Parent.Three.MouseButton1Click:Connect(PressedThree)
script.Parent.Four.MouseButton1Click:Connect(PressedFour)
script.Parent.Five.MouseButton1Click:Connect(PressedFive)
script.Parent.Six.MouseButton1Click:Connect(PressedSix)
script.Parent.Seven.MouseButton1Click:Connect(PressedSeven)
script.Parent.Eight.MouseButton1Click:Connect(PressedEight)
script.Parent.Nine.MouseButton1Click:Connect(PressedNine)
script.Parent.Add.MouseButton1Click:Connect(SelectedAddition)
script.Parent.Subtract.MouseButton1Click:Connect(SelectedSubtraction)
script.Parent.Multiply.MouseButton1Click:Connect(SelectedMultiplication)
script.Parent.Divide.MouseButton1Click:Connect(SelectedDivision)
script.Parent.Equal.MouseButton1Click:Connect(FindAnswer)
script.Parent.Cancel.MouseButton1Click:Connect(ClearQuestion)