Calculating VAT

I would like to add to my other post a small extension. I know this is not a least bit exciting but it will do me good to finally write this down.

If we know the VAT explained in percentage, than we calculate a new VAT:

NewVAT = (19+100)/100

Then:

Netto = Total / NewVAT

Total = Netto * NewVAT

Thank you for your patience, if feels good to finally let this out of my system.