>>19417638First shalt thou take out thy pen.
Then, thou shalt calculate to twelve percent.
No more. No less.
Twelve percent shalt be the number thou shalt calculate, and the result of the calculation shalt be twelve percent.
Twenty percent shalt thou not be calculated, nor either calculate thou six percent, excepting that thou then proceed to double the result.
Twenty-five percent is right out.
Once twelve percent, being the result of the calculation, be reached, then lobbest thou tip towards thy server, who, being naughty in my sight, shall display great lamentation and disdain.