HP 12C - 12c Platinum -- VAT amount, NET, GROSS

[Dr_Who2]

@BruceH
Lovely and thank you for clarifying and it is easy to memorize.
Works now like a charm.

@all
Just figured, US seller give prices without sales tax.
Latter one is added when you pay/check out. This explains the unshiftet [%] key.

Not so in Europe, where sales tax for consumer is always included in the given price.

Reminding me of this indicates, why HP, an US company, provides no direct solution for my rather simple task in the handbook. In the US, it was not necessary to deduct sales tax.

I am happy for every hint and solution I got through this thread.
It deepened my knowledge about basic RPN, dedicated memory, stacks and programing a voyager series financial calculator.

Highly appreciated