For discussion purposes, the rate is 30%. Get over it. If you wish to use the 29.87% number, knock yourself out. I am getting a kick over how annal you are being about this.
Weak-minded ones are always easily amused. Children and puppies are the same way.
Keep it in mind ... 29.87% as calculated from a stated 23% because, you see, some sales tax rates are quoted to two decimal places - your idiocy not withstanding.