There are a number of online tools which will assist with the VAT calculation such as https://vatcalc.dev/
https://vatcalc.dev/
https://myanimelist.net/profile/vatcalcdev
https://replit.com/@vatcalcdev
https://justpaste.it/u/Vatcalc_Dev
https://tapas.io/vatcalcdev
https://www.cureus.com/users/1110240-vat-rates
https://longbets.org/user/vatrates/
https://bandori.party/user/317830/vat_rates/
https://www.fundable.com/user-1204553
https://community.m5stack.com/user/vat-rates
https://www.mtg-forum.de/user/143956-vat-rates/
http://www.biblesupport.com/user/749633-vat-rates/
https://teletype.in/@vat-rates
https://drivehud.com/forums/users/vat_rates/
https://www.pixiv.net/en/users/118893113
https://www.facer.io/u/vatrates