Toggle Button Array Function

I have 15 toggle buttons that are each tied to a unique value. A toggle button identifies the value as either Active or Inactive. I then want to add a command button that will produce the product of all the Active toggle button values.

For very few togglebuttons I can use a code similar to the following (adjusting for the number of buttons)

Code:
Private Sub CommandButton1_Click()
If ToggleButton1.Value = False Then
Sheets ("CTG Calc").Range("e50 = Sheets("CTG Calc").Range("E47") * Sheets("CTG Calc").Range("E48)
Else
Sheets("CTG Calc").Range("E50) = Sheets("CTG Calc").Range("E47")
End If
End Sub

However, when I get more than just a couple togglebuttons it becomes very unwieldy to have multple If then statments for a True/False option for all 15 buttons. I know there is an easier way to do this with some kind of array function that will look at each toggle button separately anf if the togglebutton value is false will generate the product of all false togglebuttons and ignore the value of all true toggle buttons.