How do I set proper format for my results in label.text ?

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VB

Hello Everyone,

I do some calculations by using values from labels in which those labels get values from SQL.
If I use a simple way of doing division then I get very big value,
For example :

LabelTotal.Text = LabelTotal.Text / textDivide.Text

and I do division between 300/3, 300 being the number that comes from SQL, and 3 is the number that I insert manually in my text.box and I get 5 digits results without Comma or full stop separation.

What I have tried:

I tried this version of code and it did not work,

'Dim val1 As Int32 = Convert.ToInt32(Labalsum.Text)
        'Dim val2 As Int32 = Convert.ToInt32(textDivide.Text)
        'Dim val3 As Int32 = val1 / val2
        'LabelTotal.Text = Convert.ToString(val3) 

on val1 it gives me this error :

Input string was not in a correct format.

And I tried other way which is this :

Dim res As Integer = 0
res = Convert.ToInt32(LabelTotal.Text) / Convert.ToInt32(textDivide.Text)
Labalsum.Text = res.ToString()

and it gives me the same error. I would like to have the result with a full stop when it reaches 1K. Example: "1.500,25 "
Any Help is much appreciated.